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-   -   optoma HD70 color wheel shattered (https://www.avsforum.com/forum/68-digital-projectors-under-3-000-usd-msrp/1117942-optoma-hd70-color-wheel-shattered.html)

ido0 02-07-2009 03:53 PM

less then 700 hours old (about 2 years though) while watching a movie, popping sound, and unit shutdown.

I checked the lamp which is ok. only the color wheel was shattered.
the unit works fine otherwise (i think).

questions:

I don't live in the US anymore, and I think I'm out of warranty (its been around two years give or take since i got it)

A. anywhere i can check if its still covered under warranty ?

B. where can I buy a new color wheel ?

C. can I install the color wheel myself? I already took the broken one out of its place: When installing a new one, does it require to sync it somehow ? or just insert the wheel and thats it ?

ido0 02-11-2009 12:47 PM

A. turns out its not under warranty

B. found a place which sells colorwheels for my model

but can some one please answer me about C ?
- can I install the color wheel myself or should i pay them to repair it
- When installing a new one, does it require to sync it somehow ?

quantumstate 02-11-2009 01:27 PM

Yep, that's Optoma for you!

The color wheel is inside the 'light engine', which is usually replaced as an FRU. I don't know whether you can replace just the color wheel, but its sync is built in so you don't have to worry about that. Just install the new in the same registration as the old.

TF Ghost 02-11-2009 01:29 PM

Ah! I didn't know about the sync issue but I do know you can replace just the color wheel, so it sounds like you should be set.

augiedoggy 02-11-2009 01:58 PM

Quote:
Originally Posted by quantumstate View Post

Yep, that's Optoma for you!

The color wheel is inside the 'light engine', which is usually replaced as an FRU. I don't know whether you can replace just the color wheel, but its sync is built in so you don't have to worry about that. Just install the new in the same registration as the old.

what do you mean "thats optoma"?....most of the colorwheel failures I read about and one I experienced was infocus related....not bashing but come on its not common to optomas

jarrod1937 02-11-2009 02:03 PM

Quote:
Originally Posted by augiedoggy View Post

what do you mean "thats optoma"?....most of the colorwheel failures I read about and one I experienced was infocus related....not bashing but come on its not common to optomas

He's the anti-optoma guy around here.

augiedoggy 02-11-2009 02:10 PM

Quote:
Originally Posted by jarrod1937 View Post

He's the anti-optoma guy around here.

he probably owns a mitsubishi unit manufactured by optomas parent company coretronics....lol

augiedoggy 02-11-2009 03:24 PM

Quote:
Originally Posted by quantumstate View Post

You gotta be sh1tting me. Do a little looking around, and a shattered color wheel is more common to Optoma than any other brand. If anyone would know, I would.

But you two can goard head with your reach-around, as you like...

And nope, never owned (nor would I) a Mitsubishi.

hey relax...and grow a sense of humor...I've only owned three projectors myself one being an infocus other two optomas...and have a friend who has owned two, an infocus and then he upgraded to the same optoma I had.....almost two and a half years later and both the optomas are going strong with no issues.....however both of the infocuses died....his color wheel failed and mine sounded like a buzzsaw until the bulb ballast or balb cooling fan died and prevented it from working at all.....he sent his in for repair and it worked for almost 6 months before it failed again. Now I'm sure one of the main reasons I see sooo many failed colorwheel and collapsed light tunnel threads on infocus products is there are soooo many older infocus products out there being used compared to optomas... where this is honestly the first time I've personally come across anybody mentioning having a colorwheel fail on an optoma.....and since my last two projectors are optomas thats usually the threads I try stick to reading not that I'm here that often reading so...
So as you can see not everyone has the same personal experiences to be so biased against one brand....especially one that manufactures so many other brands?

ido0 02-11-2009 04:13 PM

The color wheel isn't in the light engine (i think) at least not in this model.
It took only one screw to get the shattered colorwheel out, and I'd like to know if i put a new one in does it need any calibration or what ?

jarrod1937 02-11-2009 06:17 PM

Quote:
Originally Posted by ido0 View Post

The color wheel isn't in the light engine (i think) at least not in this model.
It took only one screw to get the shattered colorwheel out, and I'd like to know if i put a new one in does it need any calibration or what ?

If its the correct color wheel, the light sensor (part of the old color wheel assembly you have) will read a black strip on the side of the motor, this is how the projector tracks the color wheel position, so no need to calibrate it for that.
And yeah, i wouldn't really say its part of the light assembly either, more so a part that sort of slides into the path.

reconlabtech 02-11-2009 06:52 PM

Quote:
Originally Posted by quantumstate View Post

You gotta be sh1tting me. Do a little looking around, and a shattered color wheel is more common to Optoma than any other brand. If anyone would know, I would.

But you two can goard head with your reach-around, as you like...

And nope, never owned (nor would I) a Mitsubishi.

Nice mouth...

Prove your claim or hit the road. And take your filthy inuendo with you.

Ekus 04-03-2009 03:57 PM

Hello all, this is my first post here. Great forum!

I, too, am looking for the replacement color wheel for Optoma HD70.

My color wheel failed after about 2000 hrs (2.5 years), just as I was starting to shop for a replacement lamp. Looks like the lamp will have to wait, as I have to make sure it is fixable first... Two of the color wheel's glass segments broke into tiny pieces. I managed to open the projector and remove the color wheel fairly easily. I have some photos for future reference if anybody is interested.

Any suggestions? Is it worth it? I need to fix the wheel AND then buy a new lamp, and I hope I can have them for around 100 and 250 USD respectively...

Sheridan1952 04-03-2009 04:43 PM

Last time I checked, an HD70 color wheel is about $170.

ido0 04-04-2009 01:28 AM

I just replaced mine a while ago, the colors are a bit off (the store replaced it with an HD72 colorwheel).

is there a way to recalibrate or did something else go bad ?

the symptoms that color show up a bit dithered...

reconlabtech 04-04-2009 06:23 AM

Quote:
Originally Posted by ido0 View Post

I just replaced mine a while ago, the colors are a bit off (the store replaced it with an HD72 colorwheel).

is there a way to recalibrate or did something else go bad ?

the symptoms that color show up a bit dithered...

Is TrueVivid on or off? I'd turn it off if it is on.

jarrod1937 04-04-2009 07:54 AM

Quote:
Originally Posted by ido0 View Post

I just replaced mine a while ago, the colors are a bit off (the store replaced it with an HD72 colorwheel).

is there a way to recalibrate or did something else go bad ?

the symptoms that color show up a bit dithered...

Who the hell did that? If its been replaced with the color wheel below (from cine4home with an article of the hd72i), then the color wheel segments are different sizes:


In particular the white segment is a different size. From my experience, this leads to the mainboard driving the color wheel wrong, and where it feels the white segment should be, it displays the next color filter occupying the same space. This leads to a bit of banding, as it is showing a color, instead of white, where there should be highlights.
Only way to fix this issue would be to replace the color wheel with one that has correct segment sizes, or do a firmware hack that updates the projector with firmware designed to drive a color wheel (and dmd) with those segment sizes.
This is assuming the color wheel for the hd72 is the same as the hd72i shown above... i don't know what difference the "i" makes between them. This is also assuming my memory serves me correct on the size of the white segment in the hd70, though sadly i cannot finds any pictures online to verify it.

TF Ghost 04-06-2009 06:21 AM

Quote:
Originally Posted by jarrod1937 View Post

Who the hell did that? If its been replaced with the color wheel below (from cine4home with an article of the hd72i), then the color wheel segments are different sizes:

Right? That's one heck of a service center. I take it they didn't turn it on and test it before returning it to you?

fafouneou 05-15-2009 04:12 AM

Hello,

I had the same problem as this movie last night but in continu
youtube.com/watch?v=Uz3z129CDzk
The HD70 is out of warranty since 3 months and is already going to Optoma 2 times during the guarantee once in November 2008 for a problem of random green flash.
Do you think is the color wheel problem?
Where I can find a color whell for the HD70 on the web ?
Does it require to sync it ?

Sorry for my poor english but i'm French...

^^

Thanks a lot for your help

guitarman 05-17-2009 09:40 AM

The colorwheel probelm would be where the glass breaks up, you'll probably just see a black and white image. On your video It looked like posturization or could even be just a bad connection. You could try a full factory reset in the service menu. I don't have it handy maybe someone could chime in and give you the service menu.
good luck

jarrod1937 05-17-2009 10:00 AM

Quote:
Originally Posted by guitarman View Post

The colorwheel probelm would be where the glass breaks up, you'll probably just see a black and white image.

Actually that's only if the color wheel is completely gone. If the color wheel is still functional, but the timing of the color wheel is being lost periodically you may see whats in that video. Two of the most likely reasons for the timing being lost are:
1.) Bearings going bad, so every once in a while a "hiccup" occurs in its spinning, which can cause it lose timing periodically.
2.) The black strip that a color wheel uses for judging the color wheels position cannot be read reliably. This may happen if there is dust on the sensor or perhaps even partially on the black strip itself.

areaglew 05-28-2009 08:57 PM

Reviving this thread for a similar issue...

I think my color wheel is going out on my HD70. The symptoms:
1) The projector turns on fine and the image is sharp and vivid.
2) After about 20 minutes, the projector image flashes with different colors. The image is still visible, but the colors are wrong.
3) A few seconds later, the projector gives a brief whine... then it shuts down and the warning indicator shines a solid orange.
4) The projector is unresponsive to the remote. I have to unplug and replug, then it will start up again, although it takes about 5 minutes of start-up attempts before it will display an image. Then back to step 1.

Any idea if this is a color wheel problem or a lamp issue? Or maybe something else? The lamp has about 1200 hours on it. I bought the projector used about a year ago, and a new lamp or color wheel would cost more than the projector did... so I'm not sure if I would try to fix it unless I was sure of what the problem is.

Any takers?

Also, is there an online guide to taking the HD70 apart?
Any info would be appreciated...
--
bill buck

coug7669 05-28-2009 11:35 PM

Areaglew contact Sheridan from this thread. He services pj's and is very reasonable in his prices. He already listed the price for DIY pm him for installation. I retrofitted my davis colorwheel with grommets. I had a nec 240 that shattered and saw how flimsy that wheel was compared to the davis and decided then that I did not want to risk damaging the new wheel. Sheridan installed wheel for a reasonable price and I am very pleased with the work.

draktheas 06-18-2009 04:29 PM

Anyone know where I can get one of the HD70 color wheels?

P.S. - I know about PM'ing Sheridan, but my post count is too low.

reconlabtech 06-18-2009 07:08 PM

Post a few more times until you can PM him...

TF Ghost 06-19-2009 07:05 AM

I PM'd him for you...

ejsr 06-24-2009 10:04 PM

We just moved and found our color wheel has broken for our Optoma HD70 as well. I need to buy a new color wheel and have it installed, unless we can do it ourselves? Maybe I need Sheridan's help too, are you there? Or do any of you know where I can buy one? Thanks so much! Elisa

ido0 06-25-2009 01:50 AM

You can do it yourself I guess, its rather easy. just get the correct color wheel. I got mine at a local projector store for less then $180

rnengnr 06-25-2009 07:16 AM

Quote:
Originally Posted by reconlabtech View Post

Nice mouth...

Prove your claim or hit the road. And take your filthy inuendo with you.

with all the "ME TOO" Optima color wheel falures that have popped up on this thread alone.....

Looks Like the Optima case of the faulty colorwheel has been built...

anything else you need for proof of design flaw Mr Recon

TF Ghost 06-25-2009 07:47 AM

Wow! 5 whole people in this thread alone! And how many HD70's were sold?

In any case stating color wheel failures are more common to Optoma than any other brand, and backing it up with "if anyone would know, I would know", is nonsense. Is it possible that Optoma's color wheels have a higher failure rate than other manufacturers? Sure. However it's equally likely that Optoma happens to be a more popular brand for the sub $3k home theater enthusiasts that post on AVS Forum.

rnengnr 06-25-2009 08:05 AM

do you know anything about statistics dude...............

this is a mere sample of the few users of avsforum of the few that wanted to search the threads....


maybe a 20% of all optima users on AVS,,,,,,
and you got five hits...... seems like a graphable trend to me.....

toyota would have had a recall by now

nice try

reconlabtech 06-25-2009 08:44 AM

Quote:
Originally Posted by rnengnr View Post

with all the "ME TOO" Optima color wheel falures that have popped up on this thread alone.....

Looks Like the Optima case of the faulty colorwheel has been built...

anything else you need for proof of design flaw Mr Recon

A few "me toos" proves nothing of the sort. In mass production, a failure rate of 2 or 3% is expected and could go as high as 10% with no recall. How many thousands of HD70s have been sold? I don't see a faulty wheel being the problem. However, AVSForum is a great place to come and get help if you need it!

If this thread was 2,000 plus posts with over 100 people complaining that their color wheel failed, I MIGHT believe there was an issue.

The Mitsubishi HD1000 color wheels have more failures than this.

reconlabtech 06-25-2009 08:48 AM

Quote:
Originally Posted by rnengnr View Post

do you know anything about statistics dude...............

this is a mere sample of the few users of avsforum of the few that wanted to search the threads....


maybe a 20% of all optima users on AVS,,,,,,
and you got five hits...... seems like a graphable trend to me.....

toyota would have had a recall by now

nice try

Go read the Panasonic AX100u threads all the way through and then compare this thread to them. When this thread matches that, then you might have an argument.

It's a typical rookie mistake so I'll cut you some slack.

Sheridan1952 06-25-2009 08:50 AM

As some here already know, I maintain the projectors for a chain of sports bars. That's over 25 units in place. All were Infocus X1 and X2 projectors. Over the course of 2 - 3 years, every single one had to have a new color wheel, some more than once. So I would say that Infocus had the worse track record.

Quote:
Originally Posted by reconlabtech View Post

A few "me toos" proves nothing of the sort. In mass production, a failure rate of 2 or 3% is expected and could go as high as 10% with no recall. How many thousands of HD70s have been sold? I don't see a faulty wheel being the problem. However, AVSForum is a great place to come and get help if you need it!

If this thread was 2,000 plus posts with over 100 people complaining that their color wheel failed, I MIGHT believe there was an issue.

The Mitsubishi HD1000 color wheels have more failures than this.


TF Ghost 06-25-2009 08:51 AM

Quote:
Originally Posted by rnengnr View Post

do you know anything about statistics dude...............

this is a mere sample of the few users of avsforum of the few that wanted to search the threads....


maybe a 20% of all optima users on AVS,,,,,,
and you got five hits...... seems like a graphable trend to me.....

toyota would have had a recall by now

nice try

Does anyone have a link to that Magic 8-Ball "what should I eat for lunch" site? I've been searching for a while but can't seem to find it. I asked a real Magic 8-Ball and it said "signs point to yes", which confirms my suspicions that I'm hungry, however I still don't know what to eat. Not very helpful IMO.

reconlabtech 06-25-2009 08:54 AM

Quote:
Originally Posted by Sheridan1952 View Post

As some here already know, I maintain the projectors for a chain of sports bars. That's over 25 units in place. All were Infocus X1 and X2 projectors. Over the course of 2 - 3 years, every single one had to have a new color wheel, some more than once. So I would say that Infocus had the worse track record.

Ouch! You certainly became the expert on that model!

reconlabtech 06-25-2009 09:14 AM

Quote:
Originally Posted by TF Ghost View Post

Does anyone have a link to that Magic 8-Ball "what should I eat for lunch" site? I've been searching for a while but can't seem to find it. I asked a real Magic 8-Ball and it said "signs point to yes", which confirms my suspicions that I'm hungry, however I still don't know what to eat. Not very helpful IMO.

Have you ever tried www.hunch.com?

TF Ghost 06-25-2009 10:55 AM

No, but it looks like a very useful site - I'll check it out and report back! Thanks!

rnengnr 06-26-2009 07:27 AM

Reconlabtech

TECH ,,,,,,,,,,,, get a clue

Rookie

reconlabtech 06-26-2009 07:38 AM

Quote:
Originally Posted by rnengnr View Post

Reconlabtech

TECH ,,,,,,,,,,,, get a clue

Rookie

Clues requires statistics. Please be complete and unbiased.

Thanks!

TF Ghost 06-26-2009 08:36 AM

Quote:
Originally Posted by rnengnr View Post

Reconlabtech

TECH ,,,,,,,,,,,, get a clue

Rookie

Your name is "Rookie"?? Very fitting! Excellent choice my friend...

TF Ghost

Daventry 06-26-2009 01:05 PM

Quote:
Originally Posted by reconlabtech View Post

A few "me toos" proves nothing of the sort. In mass production, a failure rate of 2 or 3% is expected and could go as high as 10% with no recall. How many thousands of HD70s have been sold? I don't see a faulty wheel being the problem. However, AVSForum is a great place to come and get help if you need it!

If this thread was 2,000 plus posts with over 100 people complaining that their color wheel failed, I MIGHT believe there was an issue.

The Mitsubishi HD1000 color wheels have more failures than this.

3% sounds low if it includes infant mortality.

I had an Optoma built HP XB31 color wheel shatter, but only after 12,000 hours. The sleeve bearing wore out and would buzz. The vibration was too much and the glue that held the wheel together gave out. I think this was a X2, so 12,000 hours at 3600 rpm = 2.5 billion revolutions - whew! A drop of sewing machine oil helped a little before it went.

If your projector buzzes, stop it and fix it. You are about to lose a color wheel or fan.

Dust is the enemy of any bearing and any moving part is a maintenance item, especially fans with plastic bearings.

parawizard 06-26-2009 01:23 PM

Really,

I am sure if projector companies actually tried to make color wheels that dont shatter I am sure they could. Really they are probably milking in the money on their service centers and spare parts.

jarrod1937 06-26-2009 02:13 PM

Quote:
Originally Posted by Daventry View Post

The vibration was too much and the glue that held the wheel together gave out. I think this was a X2, so 12,000 hours at 3600 rpm = 2.5 billion revolutions - whew!

Does the X2 double up on its color filters? If not then its double that (assuming 60 hz refresh rate).

Daventry 06-26-2009 09:08 PM

Quote:
Originally Posted by jarrod1937 View Post

Does the X2 double up on its color filters? If not then its double that (assuming 60 hz refresh rate).

No. Single. I stand corrected.

JRace 06-29-2009 09:49 AM

Quote:
Originally Posted by parawizard View Post

Really,

I am sure if projector companies actually tried to make color wheels that dont shatter I am sure they could. Really they are probably milking in the money on their service centers and spare parts.

Do you really think that any company wants to produce a product that fails?
Do you have any idea just how much it costs to warranty products?
And what about the bad 'press' that comes with poor quality....just look at this thread!

Jimilu 07-02-2009 10:16 AM

Quote:
Originally Posted by fafouneou View Post

Hello,

I had the same problem as this movie last night but in continu
youtube.com/watch?v=Uz3z129CDzk
The HD70 is out of warranty since 3 months and is already going to Optoma 2 times during the guarantee once in November 2008 for a problem of random green flash.
Do you think is the color wheel problem?
Where I can find a color whell for the HD70 on the web ?
Does it require to sync it ?

Sorry for my poor english but i'm French...

^^

Thanks a lot for your help

I have the exact problem. I thought it was a cable, but i already tested with composite and HDMI ant the results are the same.
The green flashes starts until 20 or 30 minutes of use, then its random.
Fortunately (or unfortunately) i have another hd70 laying around because the power supply circuit failed. Shall i use it so i can scavenge parts, or sent both to repair. They are out of warranty.

draktheas 07-03-2009 04:11 PM

Ok, I contacted Sheridan. He really didn't seem to want to help. The reply was something like: The color wheels are probably still available from my source but they won't sell to you because you aren't a repair shop. Sent a PM back and got no response.

Anyone else know a source for these color wheels? I find it hard to believe that I am out a $1000 projector (well $1000 when I bought it) because of a $3 piece of glass with $4 worth of electronics.

Drak

Sheridan1952 07-03-2009 05:10 PM

Okay, I thought I did respond. Sorry about that, I've been slammed here and lost track. If you want the color wheel, it's $170 plus shipping. It has to be ordered and will take about 2 weeks or so to get to me.

Quote:
Originally Posted by draktheas View Post

Ok, I contacted Sheridan. He really didn't seem to want to help. The reply was something like: The color wheels are probably still available from my source but they won't sell to you because you aren't a repair shop. Sent a PM back and got no response.

Anyone else know a source for these color wheels? I find it hard to believe that I am out a $1000 projector (well $1000 when I bought it) because of a $3 piece of glass with $4 worth of electronics.

Drak


jarrod1937 07-03-2009 05:26 PM

Quote:
Originally Posted by draktheas View Post

Ok, I contacted Sheridan. He really didn't seem to want to help. The reply was something like: The color wheels are probably still available from my source but they won't sell to you because you aren't a repair shop. Sent a PM back and got no response.
Drak

Yes, that is a commonality that should be expected. Most companies all of sorts are weary about sending parts to a customer, and prefer to only send them to repair shops. This is for two main reasons:
1.) Most users have no idea what they're doing, which may very well result in breaking the parts they order... A company does not want to deal with this crap.
2.) For liability reasons you cannot advocate the user, of a purchased electronic device, opening and attempting to repair it... If you lack understanding, you can easily hurt yourself (try getting shocked by the ballast's initial lamp voltage spike...).

And lastly,
"because of a $3 piece of glass with $4 worth of electronics"
A color wheel may look simple, but it is a great feat of engineering. A single set filter 4x color wheel spins 240 times a second! While being timed exactly with the refreshes of each dmd pixel. That requires an insane amount of precision and balance. The glass most withstand the heat from a high pressure mercury vapor lamp. Couple this with high tech color filters that let through the allowed light and reflect the rest of the spectrum, as opposed to absorbing the disallowed light and heating up (what most cheap filters do), and you'll see why color wheels are expensive.

draktheas 07-03-2009 06:34 PM

Sheridan, thanks for getting back to me. I take back anything bad I may have said about you.

Jarrod, thanks for the explanation. By making it totally inaccessible for the average consumer to get repair parts for this, they are also making it inaccessible for a lot of small repair shops too. I personally went to five, yes five, different locally owned repair shops and NONE of them could even find the part through their suppliers. That is really ridiculous. Second, there quite a few people out there that happen to know electronics well enough to repair their own. I happen to be one of those people.

Drak

danieloneil01 07-08-2009 04:16 PM

Like a few have posted, where can I get a color wheel?

Sheridan1952 07-08-2009 04:21 PM

I don't know of any places that will sell to the end-user. Let us know if you are successful.

danieloneil01 07-08-2009 04:33 PM

I called Optoma directly (long distance) and the part is 129 plus shipping. And it can take 3 days to process it, then another 2 days to pick their butt cracks then they'll ship it. So anywhere from 7-14 days. UGH!!!!!!!!! I have to watch tv on the 32" LCD NOOOOOOOOOOOOOOOOOOOOOOO.


Optoma drags their feet. It has to go through a few departments before it's sent out that's why I said they had to pick their butts.

If anyone needs to know. The part # for the Color Wheel is

70.85S22GR01

Their number is 408-383-3700

Sheridan1952 07-08-2009 04:39 PM

That's unusual in my experience. Most manufacturers will not sell parts to an end-user.

As Andy Griffith was fond of saying "Good on you".

danieloneil01 07-08-2009 04:52 PM

I have to fill a form out so I still hope you're wrong.

But something tells me I may get a phone call in a few days telling me they can't/won't ship it to me. But the female I talked to never mentioned not being able to ship it to me. Just that I had to pick how I wanted it shipped.

Sheridan1952 07-08-2009 05:02 PM

Let's hope. I can't get it any sooner than you can.

danieloneil01 07-08-2009 05:04 PM

Well the form made me happy. 129 for the part and 65 for overnight. Came to a total of 194.00. Just filled the form out and sent it to them. So hopefully they really don't take 5 days to process it. And she made sure they had it so I'm crossing my fingers I get it before the weekend.

Sheridan1952 07-08-2009 05:11 PM

Overnight? You're not in a hurry are you?

Take your time with the installation, the color wheel is very fragile and will break if you look at it cross-eyed. Also take the time while you have to the projector open to do some cleaning. If you blast away at any dust, you will most certainly need to lift the cover off of the imaging chamber. Because dust can and will get in there and onto the optics, which will show up in your image.

danieloneil01 07-08-2009 05:17 PM

I already have 3 blurry like images that I think are dust balls in the image. I took one of those garage vac to it and just removed the hose to the other side to blow it out. But yes I will take my time and clean every part and I'll be extremely careful.


Now I just need to see what the color wheel looks like


I've taken it apart before. It was full of water after Hurricane Ike. LOL, I was on the toliet and heard water dripping. I went into my media room and seen the wet carpet. I looked up and it was coming from the projector. I took it off the ceiling and about 1pt of water came out of it. I took it apart and let it dry over night and put it back together and it worked. Funny thing is I never disconnected it from the wall so I got lucky that the electricity shut off before the water got to it.


End of Story. I'll let you know how it goes. Hopefully you're right and that it's the color wheel. I went off your post since you sound like you know what you're talking about

Sheridan1952 07-08-2009 06:14 PM

Let's hope that's the problem. I had a different model Optoma on my bench recently with the same problem and the color wheel was the culprit. It's possible it's the controller circuit but not very likely.

On your dust, open the imaging chamber, it's directly behind the lens, that will expose the DMD and related optics. Use canned air (air only, no vapor, no shaking of the can) to clean those optics. Use a cotton swab with most of the material removed to clean the inside of the light tunnel with denatured alcohol.

One more thing. On the color wheel ribbon cable, pay close attention to the orientation of the connector. It can be inserted upside down and you won't know until you've put it back together and discovered it doesn't work. And back inside you go. The main board connector "keeper" slides out away from the connector, releasing the ribbon cable. Move this gently, it too can break if mishandled.

sundansx 09-16-2009 11:40 AM

danieloneil01, how did you projector wheel replacement turn out. Were you able to get the color wheel from optoma, or did they eventually turn you down? don't leave us hanging...
thanks.

Sam_I_am 11-21-2009 08:43 AM

::danieloneil01

My projector (2006 HD70:3500hrs+) may have the same issue.

Could you please snap some pics of parts and procedure?

My bulb was on time to die when my wife heard a pop and crack, so I thought it was the bulb. The bulb was fine, but I noticed broken colored glass pieces (large and small) throughout the projector that looked more pearlescent rather than defined RGB. I believe the bulb overheated and what popped first was the color wheel.

Its really lame to discover that service for projectors such as from ProjectorDoctor racks up an instant bill of $195(flat rate) + Parts + Shipping. If you decline their quote they'll still charge a $65 evaluation fee.

So to get a projector up and running again its going to cost approximately:

$ 195 labor
. 130 color wheel
+ 250 bulb
$ 475

Considering that its not too unlikely that the entire scenario can happen again and with no warranty to blanket it, and adding the fact that the market for new 1080p projectors nowadays costing only double the price of this fix, well, I'm in the mood to wait or even jump ship from the whole projector thing now that bigger(big enough), brighter, longer lasting LED TVs are coming to shore.

The only problem is, what do I do with this broken one. Donating to an orphanage just seems mean considering the cost to fix, unless someone knew of a friendly service that would donate some time or discount at least.

Please update us if your sitting on your couch watching movies already!!

if anyone can PM or IM or email HIM, that would be great... ty

Sheridan1952 11-21-2009 08:54 AM

Your bulb did not overheat, the projector would have shut down if that occurred. The color wheel failed on its own. They do that. I've replaced dozens of color wheel in projectors, mostly Infocus, some Optoma.

As far as how danieloneil01 fared, I got a PM from him not long after that reporting that he got the color wheel and had an accident with it. He managed to drop it on the table and it shattered. So the time and money he spent was for naught.

I don't know of ANYONE in business that donates their time and stays in business. And the cost you were quoted was quite reasonable. If you believe otherwise, you're perfectly free to get the part yourself and dismantle your own projector. Just remember, the color wheel is very fragile and WILL break if mishandled.

Good luck.

ido0 11-22-2009 12:15 AM

If he's careful he can do it on his own, its not that hard. i bought just the colorwheel (I think it could be found online for around $150)

danieloneil01 11-22-2009 07:54 PM

Wow, sorry guys I haven't been on here in a long time. I broke the color wheel I got from Optoma when I was trying to put it in. I dropped it 6" or so on the counter and that was the end of that. But it's still working and the only thing I did was get an air can and blew all the dust out when I had it completely taken apart.

And if you don't drop the color wheel it's easy to take the projector apart and install a new one. The Optoma has been a great projector. It even survived being filled with water during Ike.

Georgeb 11-23-2009 08:17 AM

Broken color wheels are not just an Optoma problem. I had a brand new BenQ W10000 with only 30 hours on it before the color wheel shattered. I've also read about other makes including Infocus and Sharp that had bad color wheels. It's just one of the possible things that can go wrong with dlp. Of course, lcd has its own potential issues so nothing is foolproof.

danieloneil01 11-23-2009 12:30 PM

To be clear, I broke the color wheel. I have man hands so handling something that small isn't easy. I think dust may have gotten in the shaft that spins so the motor wasn't able to spin it fast enough.

banderson16 12-29-2009 04:53 PM

Quote:
Originally Posted by areaglew View Post

Reviving this thread for a similar issue...

I think my color wheel is going out on my HD70. The symptoms:
1) The projector turns on fine and the image is sharp and vivid.
2) After about 20 minutes, the projector image flashes with different colors. The image is still visible, but the colors are wrong.
3) A few seconds later, the projector gives a brief whine... then it shuts down and the warning indicator shines a solid orange.
4) The projector is unresponsive to the remote. I have to unplug and replug, then it will start up again, although it takes about 5 minutes of start-up attempts before it will display an image. Then back to step 1.

Any idea if this is a color wheel problem or a lamp issue? Or maybe something else? The lamp has about 1200 hours on it. I bought the projector used about a year ago, and a new lamp or color wheel would cost more than the projector did... so I'm not sure if I would try to fix it unless I was sure of what the problem is.

Any takers?

Also, is there an online guide to taking the HD70 apart?
Any info would be appreciated...
--
bill buck

This is what happened to me! I have had the HD70 for 2 years on the dot and had 2300 hours on the bulb. I ordered a replacement, assuming that was what it meant. Well, today we put in the new bulb and 15 minutes later, the exact same thing happened! I did some research, found this site and still have some questions. We opened it up, cleaned it out - and the color wheel looks like it is in perfect condition. Nothing was broken, the unit was pretty clean. Since the bulb cost me $200 and a wheel is about the same, we are darn near the cost of a new unit. This just seems over the top to me, to pay $400 every 2 years to keep it going...

banderson16 12-29-2009 05:01 PM

Oh, and my husband just turned it back on, after cleaning it out and seeing the color wheel looks fine. Put in the old bulb, as it still has hours left on it and now it is showing white vertical lines across the screen, like in the other post I saw. Ugh.

Sheridan1952 12-29-2009 06:08 PM

White vertical lines in a DLP are NOT caused by the color wheel. They are a sign of a failure in the image processor. Not a cheap repair, the entire main board would be replaced.

banderson16 12-29-2009 08:23 PM

Quote:
Originally Posted by Sheridan1952 View Post

White vertical lines in a DLP are NOT caused by the color wheel. They are a sign of a failure in the image processor. Not a cheap repair, the entire main board would be replaced.

What explains what was happening BEFORE the white stripes? Which, by the way - after much fiddling, are now gone, thankfully!

Sheridan1952 12-29-2009 08:36 PM

If you're referring to the color instability issue, that COULD be a faulty color wheel, but the fact that you had those white lines, points to a failing processor. The white lines are lines or columns of pixels (mirrors) in the DLP imager that are being commanded by the processor to turn on. That they have gone away only says that the problem is intermittent and could come back. Some mistakenly believe that it is a faulty connection, but that would result in BLACK or Blank lines where the columns are not getting any commands and therefore, off.

And the lamp will NEVER be the cause of any color or image problems, other than reduced brightness/contrast.

If the problem never comes back for you, great. We can only hope. I'm just giving you the best information I can based on the information you provided and my years of repair experience on projectors just like yours.

sdmunn 01-04-2010 06:17 PM

I have an Optoma HD32 which I believe is just like the HD70. I am getting the flashing colors problem after 20-30 minutes also. The flashing color problem seems worse when the fan comes on to cool the projector and when the room gets up to around 70 degrees.

I believe that I have dust on/around my color wheel. I have opened up and cleaned the dust on the lense in the imaging chamber to solve the gray dot problem. However, I do not know what/where the color wheel is. Could someone show me a picture or give directions on what to clean?

Sheridan1952 01-05-2010 06:11 AM

If you opened the imaging chamber, you completely missed the color wheel. It is located in the optical path between the lamp and the imaging chamber. It is somewhat enclosed. However, dust on the wheel is not going to cause the problem you're having. It is most likely an indication of impending failure of either the wheel itself or the driver, which is part of the main board.

Quote:
Originally Posted by sdmunn View Post

I have an Optoma HD32 which I believe is just like the HD70. I am getting the flashing colors problem after 20-30 minutes also. The flashing color problem seems worse when the fan comes on to cool the projector and when the room gets up to around 70 degrees.

I believe that I have dust on/around my color wheel. I have opened up and cleaned the dust on the lense in the imaging chamber to solve the gray dot problem. However, I do not know what/where the color wheel is. Could someone show me a picture or give directions on what to clean?


JaymzMhart 01-11-2010 10:44 PM

Hello to everyone! I am an Industrial Electrician and a gadgeteer. I have been scouring the internet trying to find a color wheel for an Optoma/Dell projector and now I know why they are so hard to get... thanks Sheridan1952. I have a small business on the side doing computer repairs. I purchased a Dell 2200MP projector on ebay. It was described as noisy with a good picture. I found that the color wheel had the clear quadrant missing so it was out of balance. I also have another of the same model for parts that was in a flood. When I took the color wheel out of it, it was missing a chunk of one of the sectors. Using an exacto knife, I carefully formed a piece of packaging tape onto the entire face of the wheel to hold the broken piece. When I put it in my good projector, it was quiet with a good picture. As I expected, after fifteen minutes, the tape began to deteriorate from the heat and it was beginning to get noisy so I shut it down to prevent any further damage. Does anyone know what the equivalent Optoma model number of the projector is, or was it a 'Dell-only' model made by Optoma? Also, would I be able to purchase the proper wheel from you Sheridan1952?

Thanks for a great forum and also for any further help!

Sheridan1952 01-12-2010 06:25 AM

To the best of my knowledge, Dell's projectors are made by company in Taiwan (Coretronic), not Optoma. But just to check, I did take a close look at the 2200MP and it bore no resemblance to any that Optoma ever made.

There is a possible lead I'm trying to run down for parts but I am not hopeful. My main supplier has been trying to get Dell parts for sometime without success. But if I have any news, I'll post back here.

Quote:
Originally Posted by JaymzMhart View Post

Hello to everyone! I am an Industrial Electrician and a gadgeteer. I have been scouring the internet trying to find a color wheel for an Optoma/Dell projector and now I know why they are so hard to get... thanks Sheridan1952. I have a small business on the side doing computer repairs. I purchased a Dell 2200MP projector on ebay. It was described as noisy with a good picture. I found that the color wheel had the clear quadrant missing so it was out of balance. I also have another of the same model for parts that was in a flood. When I took the color wheel out of it, it was missing a chunk of one of the sectors. Using an exacto knife, I carefully formed a piece of packaging tape onto the entire face of the wheel to hold the broken piece. When I put it in my good projector, it was quiet with a good picture. As I expected, after fifteen minutes, the tape began to deteriorate from the heat and it was beginning to get noisy so I shut it down to prevent any further damage. Does anyone know what the equivalent Optoma model number of the projector is, or was it a 'Dell-only' model made by Optoma? Also, would I be able to purchase the proper wheel from you Sheridan1952?

Thanks for a great forum and also for any further help!


JaymzMhart 01-12-2010 11:15 PM

Thanks! I'll be patiently waiting and checking ebay for more 'parts-only' projectors. As per my description, I'm sure you know that the color wheel is made up of four equal sections. Only the clear 'filter' is gone. The previous owner must have removed the loose piece from the projector before selling it. There isn't any part of it left in the hub, so the whole piece must not have been seated properly from the factory.

Sheridan1952 01-13-2010 06:50 AM

Not quite. The segments are merely glued in place individually. Color wheel failure, even just one of the segments, is not uncommon. And the segment could have fallen out through a vent or if the lamp was removed.

reconlabtech 01-13-2010 08:37 AM

Clear segment missing? Hmmm... one of the DLP hacks to improve contrast is to black out the clear segment. The previous owner may have attempted to do this and knocked it out.

Hopefully you will find another wheel to use.

Sheridan1952 01-13-2010 08:41 AM

I forgot about that trick. Thanks.

Quote:
Originally Posted by reconlabtech View Post

Clear segment missing? Hmmm... one of the DLP hacks to improve contrast is to black out the clear segment. The previous owner may have attempted to do this and knocked it out.

Hopefully you will find another wheel to use.


JaymzMhart 01-13-2010 09:15 AM

Yeah, could be. I'm sure he took it apart, though, as the screws are missing on the bottom as well as the caps that hide the screws on the side of the case. What are my chances of successfully removing the excess glue on the hub and prying at the open space where the missing segment was to open the hub? I could then put in the clear segment from my 'parts' wheel and glue it back together.

Sheridan1952 01-13-2010 11:41 AM

As long as you are careful, then there is no reason you won't have success. GENTLY scrape any glue residue off the hub and the glass and I would use a small amount of high heat epoxy. Superglue would work, but the heat and centrifugal forces would cause failure over time.

faded1 01-21-2010 05:53 PM

The color wheel in my HD70 exploded on me last night. I called the number that was listed in this thread and have a new one on the way. It only costs $59 + $12 standard shipping.

Can anyone explain how I replace it? I tried taking the projector apart last night to at least clean all the broken color wheel pieces out. I could only remove the bulb and the front cover.... couldn't even get to the broken glass. I don't know what you guys mean about just one screw??

Any ideas would be appreciated.

ericlp 01-22-2010 02:37 AM

http://tantht.blogspot.com/2009/02/h...om-optoma.html

This guy created a pretty good detail blog. I was impressed!

A really good guide to opening up your hd70 and cleaning out the dust blobs from the lens assembly. But it's also a good guide to get the projector apart to change out the color wheel even tho it doesn't show you how to do that, maybe someone that is going to do that can take some good pics for the rest of us???

After reading for a few hours, I guess my lamp flicker at startup is kinda normal...

Good Luck on changing your color wheel! Hope I don't have to do it!

ronnieskar 01-23-2010 02:25 PM

My Optoma EP732 starting acting up last night. Looks like one of the colors are missing. All the blues are gray and yellows are purple. There's no reds, greens, yellows or blue. I have it open and what I can see of the color wheel, it seems ok, it's not shattered. Is this a symptom of a broken color wheel? Or something else?

Thanks

Sheridan1952 01-23-2010 02:36 PM

First, is your menu normal or is it also affected?

Second, A missing segment would mean a couple of things. One, the wheel would be out-of-balance and you would feel a vibration. Two, the loss of a segment would result in that color missing from the spectrum.

Now if all the segments were missing, you should be able to see that and the result would an image that is completely B&W.

If the wheel is intact yet the colors are scrambled, that means something else is going on. Check the image using a different input, check with a different source. IOW, eliminate every possibility.

ronnieskar 01-23-2010 03:39 PM

The menu is also off color and when the projector is warming up, screen is all white and the word optoma is purple.

No vibrations, and it sounds normal

The image is gray white and purple

No matter which DVD player or comp I use as an input, it's still bad. Not sure what you mean by 'IOW'. And I don't think the video input would make a difference, composite or S-Video, if the color is wrong when the projector is warming up...don't you think?

Sheridan1952 01-23-2010 04:36 PM

IOW - In Other Words.

I hate to say it, but it sounds like you have a major failure. But before we panic, try this...Optomas can be affected by dust. Open the projector and use canned air (when the projector is cold) around the color wheel and the sensor. If that doesn't take care of it, then based on everything you're related, it's toast.

ronnieskar 01-23-2010 04:39 PM

I guess it is toast... I had already blown it out. I might have missed the sensor....where's it located? Thanks for your help

Sheridan1952 01-23-2010 05:00 PM

It would be right next to the color wheel. A very small piece, part of a board. Did you open it to do that or just blew in from the lamp opening?

ronnieskar 01-23-2010 05:28 PM

I opened it. Thanks

ronnieskar 01-23-2010 05:29 PM

I opened it. Thanks

ronnieskar 01-23-2010 05:40 PM

I opened it up. Thanks

Sheridan1952 01-23-2010 07:38 PM

Okay.

Quote:
Originally Posted by ronnieskar View Post

I opened it up. Thanks


ronnieskar 01-24-2010 06:02 PM

Quote:
Originally Posted by Sheridan1952 View Post

It would be right next to the color wheel. A very small piece, part of a board. Did you open it to do that or just blew in from the lamp opening?

yes, I did open it. But only part of the color wheel is visible without taking the board off.

ronnieskar 01-26-2010 08:53 AM

Quote:
Originally Posted by Sheridan1952 View Post

It would be right next to the color wheel. A very small piece, part of a board. Did you open it to do that or just blew in from the lamp opening?

I opened it up but the color wheel was only visible through the opening. I would have to remove the board to see the complete color wheel. Probably should do that and blow it again since it seems to be a bust situation, huh??

Sheridan1952 01-26-2010 10:06 AM

Not necessarily, you might be able to reach the wheel and rotate it to check it, just be careful.

Quote:
Originally Posted by ronnieskar View Post

I opened it up but the color wheel was only visible through the opening. I would have to remove the board to see the complete color wheel. Probably should do that and blow it again since it seems to be a bust situation, huh??


ronnieskar 01-26-2010 10:21 AM

Quote:
Originally Posted by Sheridan1952 View Post

Not necessarily, you might be able to reach the wheel and rotate it to check it, just be careful.

I don't think I can rotate it with out taking the board lose. I can only see it through the opening. I wouldn't know what I could use to rotate it. I would have to put pressure on it and that might make it shatter.

Sheridan1952 01-26-2010 11:29 AM

It wouldn't take much pressure to move it. But that's your call.

ronnieskar 01-26-2010 01:46 PM

Quote:
Originally Posted by Sheridan1952 View Post

It wouldn't take much pressure to move it. But that's your call.

Well, actually the color wheel is enclosed. Had to pull the board (rather tricky). Wheel ok and blew a little more dust out, put it back together, still same result. Oh well, gave it 150%. Thanks again for your help.

How come computers, cameras, cell phones, even flat screen tvs get better and cheaper every year but projectors move at a snails pace and the prices are either the same or more expensive??? I really don't understand that. Do you know?


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