AVS › AVS Forum › Display Devices › Rear Projection Units › 2010 Mitsubishi 3D DLP Owners Thread (738/838 series)
New Posts  All Forums:Forum Nav:

2010 Mitsubishi 3D DLP Owners Thread (738/838 series) - Page 275

post #8221 of 8689
1/18/12 at 7:23pm
Quote:
Originally Posted by gtgray View Post

Is it not under warranty? Even if it wasn't under warranty then I am sure you can convince Mits to replace the chip or the light engine on such a new display. People are getting chips replaced on much older units. While it would be very rare to see the DMD chip fail on such a new set. It would make the case even stronger that Mits should repair it warranty or no, and I am confident they would.

Well its not super new. i think its maybe 4 or 5 yrs old and when i saw the first spec i called and i was 2 months out of warranty. I did not bother calling mitsubishi about it since i was way out of manufacturer warranty.

I have a tech coming out tomorrow to look at my 82738 and i might ask him to check out the 73733 while he is here and let me know what he thinks it is and how much it would be to fix it.
Reply
Reply

Gear mentioned in this thread:

post #8222 of 8689
1/19/12 at 6:34am
I have had my 82738 for a year now and about a month ago noticed the picture got noticeably dimmer. I read some posts and found that I probably just need to change out the lamp.

My questions are...
1. Are all lamps created equal or are some better then others? Also, where is the best place to purchase them?
2. How long should they stay bright for? The one it came with lasted about 11 mo's before dimming out.
3. Is the lamp replacement something I can do myself or do I have to call a TV repair man?

I love the TV and although I don't want to replace the lamp every year, I would to keep the picture looking bright.
Thanks, Steve
Reply
Reply
post #8223 of 8689
1/19/12 at 7:11am
Quote:
Originally Posted by TripleBlack88 View Post

I have had my 82738 for a year now and about a month ago noticed the picture got noticeably dimmer. I read some posts and found that I probably just need to change out the lamp.

My questions are...
1. Are all lamps created equal or are some better then others? Also, where is the best place to purchase them?

Mitsubishi seems to often be the best place to purchase one. I'm not sure if there are any off-brand versions available or not.

Quote:


2. How long should they stay bright for? The one it came with lasted about 11 mo's before dimming out.

It's usually more related to the number of hours of use rather than number of months or years. I would expect at least a few thousand hours of use before lamp replacement is needed.

Quote:


3. Is the lamp replacement something I can do myself or do I have to call a TV repair man?

It's very simple and explained in the manual. All you need is a screwdriver and access to the back of the TV.
Reply
Reply
post #8224 of 8689
1/19/12 at 7:32am
Thanks for the quick reply gsr. I did a little math and I probably have 3000+/- hrs on mine in the last yr, so I guess it's time.
Thanks Again!!!
Reply
Reply
post #8225 of 8689
1/19/12 at 8:45am
Quote:
Originally Posted by TripleBlack88 View Post

I have had my 82738 for a year now and about a month ago noticed the picture got noticeably dimmer. I read some posts and found that I probably just need to change out the lamp.

My questions are...
1. Are all lamps created equal or are some better then others? Also, where is the best place to purchase them?
2. How long should they stay bright for? The one it came with lasted about 11 mo's before dimming out.
3. Is the lamp replacement something I can do myself or do I have to call a TV repair man?

I love the TV and although I don't want to replace the lamp every year, I would to keep the picture looking bright.
Thanks, Steve

The bigger sets will show the lamp dimming more quickly. They don't exactly have an abundance of illumination to spare at least not the ones with the matte screens. So once the lamp is down 30-40% in brightness it will be pretty obvious. Are you running the lamp set to Bright in the Energy menu?
Reply
Reply
post #8226 of 8689
1/19/12 at 10:11am
Well the techs came and left. They told me the dimming and flickering is all cause from the bulb and that it is not the light engine. My extended warranty does not cover the bulb. >. They pulled the bulb out and then showed me some grey cloudiness forming in the bulb which is caused from the mercury inside.

They also informed me after looking at pics of my 73733 that it is the DMD chip. And as gtgray said... Mitsubishi has been covering the part even if it is out of warranty but I would need to pay for the labor which would be about 175.00 + the initial 68.00 fee for coming out to diagnose it and get the part ordered.

So there is a little light at the end of the tunnel. But I don't know about shelling out 250.00 - 280.00 to replace a bulb every 8-10 months because of my TV watching habits. They told me an LED or LCD or anything other than a DLP would probably be better for me and my viewing habits if i do not want to have to worry about the TV dimming.
Reply
Reply
post #8227 of 8689
1/19/12 at 10:20am
Is this right? The lamp for the wd82738 is only 99.99?
Reply
Reply
post #8228 of 8689
1/19/12 at 10:24am
The lamp for my 73733 comes up as 249.99

Reply
Reply
post #8229 of 8689
1/19/12 at 11:16am
Quote:
Originally Posted by import2nr View Post

It's not a 3D problem. It's a Mitsubishi light engine problem. i have the 73733 and the 82738 and they have both done this. Kinda like a strobe effect just not as drastic and obvious as a strobe. Call repairs and get em out there. You might want to get video of the TV doing it cause I had a hell of a time getting them to do anything for me because when the tech would come out the TV would never do it so if he did not see it then he could not diagnose and or confirm the issue. So I had to record and send a copy of it to some higher ups to get anything replaced. You also might want to take a look at your lamp. I got mine in Sept 2010 and had to replace the lamp in June 2011 because it failed. There was a bubble at the base of the bulb.( link to pics of the bulb http://www.avsforum.com/avs-vb/showt...3#post20488123 ) Now my TV is getting dim again which is a symptom of the lamp failing again. It's not completely failed yet but its going the same direction as the original lamp.

Another issue some people had with these sets is the HDMI handshake issue. When switching from one hdmi to another hdmi source sometimes the screen would remain blue and you would have to unplug or soft reset the tv by holding the power button for X amount of seconds.

Fix for flicker is Light engine
Fix for tv looking like its getting dimmer. Lamp replacement
Fix for HDMI issue is the Main board.

all of which have been replaced on mine about 6 -8 months ago.

An I am now having the flicker again and the dimming lamp again. The HDMI handshake issue is coming back as well but not as bad as the first time. I can fix the handshake issue but scrollingand going into each input once.

I know that's prob more than you needed to know but just an FYI you are going to have issues with these sets. if not now then later and if not later then you got lucky. lol

one more thing my 73733 has dead pixels (only way i can describe it)or white and black speckles all over the place on the screen. Which is also a light engine fix. I can only expect my 82738 to follow the same path as my 73733.

I'm done with Mitsubish. Having a big TV is no good when you cant get it to function properly. Doesnt make you want to watch it when it flickers and dims and malfunctions. I know all TV's have issues but my 73733 was replaced about 3 times and still has issues after repairs. My 82738 had issues out of the box and still does after being repaired a number of times.

Anyway sorry for the rant . Get your light engine replaced and you should be good for a little bit till its time to replace it again.


according the the techs who came to my house today... the flickering is related to the Lamp as well so I could be wrong about the flicker being fixed with light engine replacement. But When they replaced the light engine on the 733 and the 738 the flickering went away. Coincidence? maybe.
Reply
Reply
post #8230 of 8689
1/19/12 at 11:27am
Quote:
Originally Posted by gtgray View Post

The bigger sets will show the lamp dimming more quickly. They don't exactly have an abundance of illumination to spare at least not the ones with the matte screens. So once the lamp is down 30-40% in brightness it will be pretty obvious. Are you running the lamp set to Bright in the Energy menu?

Yes... it's set to "Bright" and "Brilliant".
Reply
Reply
post #8231 of 8689
1/19/12 at 11:51am
Quote:
Originally Posted by TripleBlack88 View Post

Yes... it's set to "Bright" and "Brilliant".

3K hours on the lamp in Bright will be about the limit realistically.
Reply
Reply
post #8232 of 8689
1/19/12 at 4:08pm
Quote:
Originally Posted by import2nr View Post

The lamp for my 73733 comes up as 249.99


Yeah, I have a 73833 and it seems that Mitsubishi has actually lowered the price of the lamps on the later model DLPs.
Reply
Reply
post #8233 of 8689
1/20/12 at 6:52pm
Ok, it is 3rd time that my set all of sudden lost power and got green rapid blinking LED. Even though I can just shut it off usually and bring it back up in about 5 minutes to get things going, it looks like this time, I actually had to unplug it physically and plug it back in after about 5 minutes to get it going. Symptom was that I lost sound first for about 3 minutes, and while trying to diagnose what MAY be the issue, Bam! the screen went with rapid blinking lights. My kids (who watches TV much more than I) tell me that they have seen this happen before that they just had to turn it off and turn it back on a bit later. This got me worried, I only have 2 more months of warranty left and I think I should call in and at least get it on their books that I am having the issues. That said, have anyone know what I need to write down when I call? What I should be asking them to do so that they can record the issue? Thanks.
Reply
Reply
post #8234 of 8689
1/21/12 at 7:57am
Quote:
Originally Posted by hpark21 View Post

Ok, it is 3rd time that my set all of sudden lost power and got green rapid blinking LED. Even though I can just shut it off usually and bring it back up in about 5 minutes to get things going, it looks like this time, I actually had to unplug it physically and plug it back in after about 5 minutes to get it going. Symptom was that I lost sound first for about 3 minutes, and while trying to diagnose what MAY be the issue, Bam! the screen went with rapid blinking lights. My kids (who watches TV much more than I) tell me that they have seen this happen before that they just had to turn it off and turn it back on a bit later. This got me worried, I only have 2 more months of warranty left and I think I should call in and at least get it on their books that I am having the issues. That said, have anyone know what I need to write down when I call? What I should be asking them to do so that they can record the issue? Thanks.

The shut-downs are probably the main board. I'm going on my 2nd one...
Reply
Reply
post #8235 of 8689
1/21/12 at 8:12am
Thermal protection? Is there good ventilation around the TV?
Reply
Reply
post #8236 of 8689
1/21/12 at 3:29pm
"Ok, it is 3rd time that my set all of sudden lost power and got green rapid blinking LED."

Main board.
Reply
Reply
post #8237 of 8689
1/21/12 at 9:06pm
Quote:
Originally Posted by 69mach1-377 View Post

Thermal protection? Is there good ventilation around the TV?

The TV is on a pedestal by itself with nothing around it (it is about 6-8 inches from the wall).

I would think it is main board and I will probably call and describe the issue and probably will have to get someone to come and replace it.

One question I have is that IF mainboard was bad and replaced, would the replaced part get 1 yr warranty? Or that is it and my warranty will end in April? I mean, I understand that other parts which hasn't failed yet would end in April, but wondering whether the mainboard will get 1 yr warranty from date of replacement.
Reply
Reply
post #8238 of 8689
1/22/12 at 8:01am
One thing people who are having unexpected shutdowns should check is that HDMI-CEC is off on all devices. I had shutdowns with my 82837 before I did that. I have a couple on my 92840 and I suspect HDMI-CEC in enabled on my Denon. I don't have an HDMI out cable attached to the Denon currently so I haven't looked. Probably could access it through the web interface as a last resort if I have to. I need to recalibrate audio so I will probably wait on that. I do have one more HDMI cable around here somewhere. just have to find it.
Reply
Reply
post #8239 of 8689
1/23/12 at 7:09am
The sudden shut down with the flashing power green led is not normal. Its not the normal functioning of some hdmi cec stuff. The main board needs to be replaced. The sooner you get on it, the faster it will be fixed.
Reply
Reply
post #8240 of 8689
1/23/12 at 7:13am
I've had this problem on and off for most of the time I've owned the TV, as well as the HDMI handshake issue. I am getting the main board replaced tomorrow with 1 month to go on the Warranty.

I've also noticed some issues lately with video processing - picture gets very robotic like (movements) for a couple of seconds. I am wondering if this too is related to the main board.
Reply
Reply
post #8241 of 8689
1/23/12 at 9:06am
Quote:
Originally Posted by ddelise View Post

I've had this problem on and off for most of the time I've owned the TV, as well as the HDMI handshake issue. I am getting the main board replaced tomorrow with 1 month to go on the Warranty.

I've also noticed some issues lately with video processing - picture gets very robotic like (movements) for a couple of seconds. I am wondering if this too is related to the main board.

Not sure if it's connected to the main board, but make sure the HDMI board is replaced at that time too...
Reply
Reply
post #8242 of 8689
1/23/12 at 9:10am
Quote:
Originally Posted by rightintel View Post

Not sure if it's connected to the main board, but make sure the HDMI board is replaced at that time too...

Thanks for the heads-up, I will ask about that tomorrow.
Reply
Reply
post #8243 of 8689
1/23/12 at 11:49am
I just got a note in the mail to extend the warranty on my 73738 as the current one expires. Do you guys recommend and extended warranty on this set??

Also, is there a way to check the lamp setting in the menu? Or is it just the picture getting dimmer?
Reply
Reply
post #8244 of 8689
1/23/12 at 3:10pm
[quote=SlickBK;21536610]I just got a note in the mail to extend the warranty on my 73738 as the current one expires. Do you guys recommend and extended warranty on this set??QUOTE]

I didn't buy an extended warranty and sure enough about a month out of the oe warranty my 73838 started acting up. Luckily Mits is covering it with a replacement light engine(unfortunately the engines are backordered).

I was told it will be mid Feb before the parts should be available.

What was funny is I to got the warranty offer from Mits and it wasn't long after throwing it in th trash that the tv started messing up.

Now if my tv's problem started much later out of warranty I'm not sure it would've been covered. At any rate these aren't the most reliable TV's so if I had it to do over again I'd probably buy the warranty.

btw my issue was discussed earlier in this thread but to recap...my 73838
will suddenly darken noticeably and the tint will go a bit green when there's nothing bright in the image.
Reply
Reply
post #8245 of 8689
1/23/12 at 5:52pm
"Not sure if it's connected to the main board, but make sure the HDMI board is replaced at that time too..."

All one.
Reply
Reply
post #8246 of 8689
1/24/12 at 4:38am
I got a pretty good deal from hhgregg on a 92" (WD92840) and will need to move my 82" to the basement. The problem is that my steps don't go straight down... there's a landing 1/2 way down which means I will have to turn the TV upright to make it around the turn.

Is there any danger to turning these TV's upright?
Thanks,
Steve
Reply
Reply
post #8247 of 8689
1/24/12 at 5:33am
Quote:
Originally Posted by TripleBlack88 View Post

I got a pretty good deal from hhgregg on a 92" (WD92840) and will need to move my 82" to the basement. The problem is that my steps don't go straight down... there's a landing 1/2 way down which means I will have to turn the TV upright to make it around the turn.

Is there any danger to turning these TV's upright?
Thanks,
Steve

For a short time, there's absolutely none! It's not a plasma.
Reply
Reply
post #8248 of 8689
1/24/12 at 7:50am
Quote:
Originally Posted by allargon View Post

For a short time, there's absolutely none! It's not a plasma.

Thanks allargon!
Reply
Reply
post #8249 of 8689
1/24/12 at 8:08am
Quote:
Originally Posted by rightintel View Post

Not sure if it's connected to the main board, but make sure the HDMI board is replaced at that time too...

I had the main board replaced, and I guess it will take time to see if the fix worked. One big negative is that after the repair, the geometry is now messed up. Using a reference disk, I previously had just about spot on perfect geometry. The tech is taking a long time doing his best to get things back to acceptable level, but unfortunately I doubt I will get to the standards prior to the repair.
Reply
Reply
post #8250 of 8689
1/25/12 at 8:10am
Playing 3D Blu-Ray using a PC, Mitsubishi WD-82740 & NVIDIA GeForce GT 430 video card

Please HELP. I want to use my (Win 7/64-bit/Intel i3) PC to play commercial Blu-Ray 3D DVD disk movies (like Lion King). My PC (which has a Blu-Ray player) is directly connected to my TV (Mitsubishi WD-82740 DLP 3D TV) via a HDMI cable. I have both TMT 5 and PowerDVD 11 programs.
I also have a 3D Blu-ray player which is connected to another port on TV and I have no issue playing Lion King in 3D. I want to return it and just use the PC to play 3D Blu-Ray. The Lion King works fine from the PC but it is only in 2D. The TMT5/PowerDVD have options for automatic/side-by-side/up-down for 3D contents but I don't see option for frame packing which I heard commercial 3D Blu-Ray use. My TV is a 3D TV (in addition to checkerboard, it can do side-by-side, up-down, and it is compatible with HDMI 1.4). I also ran the TMT utility that checks my hardware/software/TV capabilities for playing 3D and it tells me my system meets all the requirements. PLEASE HELP WHAT am I missing and NEED to do to play 3D?
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Rear Projection Units

Gear mentioned in this thread:

AVS › AVS Forum › Display Devices › Rear Projection Units › 2010 Mitsubishi 3D DLP Owners Thread (738/838 series)