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The Official HP Pavilion 1080P DLP Owner's Thread - Page 360

post #10771 of 10880
Quote:
Originally Posted by mherman2 View Post

I started getting the blue posterization and now the tv goes to black and white after about an hour. Can anyone tell me if this is the light engine or more??? If it's the light engine on the MD6580N, can a new or refurbished/used one be bought??
Thank you.


It sounds like your light engine is failing. When mine went, I got posterization in skin tones and reds. I have seen refurbished light engines on ebay recently, but I don't remember the price. I will tell you that replacing it is a pretty big job. It took the tech who did mine about three hours. I've built several gaming computers and I am not afraid to pull apart electronics, but this is something I wouldn't want to try myself.
post #10772 of 10880
I've had my 5880n since 2006 and its been great, but a couple of days ago I noticed a dark strip a little over an inch think across the top of the TV. It looks similar to the dark line across the top in the screenshot from this post, but I haven't noticed any of the other color issues that member mentioned. Anyone know what the problem might be?
post #10773 of 10880
If you are lucky, it is the light engine slipping out of alignment. Have you moved the TV recently? The light engine can be realigned.

It's more likely that the light engine has deveoped in issue. If this is the case there may be enough overscan to eliminate the strip by aiming the image higher, but doing so does not get back the lost part of the picture, it only hides the issue.

-Dave
post #10774 of 10880
Well, fooey! My beloved md5880n has finally died after seven years of nearly flawless performance. The red "lamp" LED flashes twice, then the red "overheat" LED flashes twice, then the cycle repeats. The color wheel doesn't spin up. I bypassed the lamp door switch and observed the lamp start to power up, then extinguish after a second. Removing the back of the set revealed very little dust, which I blew out anyway, but didn't help. Have tried the master reset from the control panel, but had no effect. Kinda sounds like a light engine problem to me, but I could be wrong. Any ideas, anyone?
post #10775 of 10880
About the only things I would suggest are leaving it unplugged overnight and trying a different lamp. If you do not have a spare lamp, you should be able to pick up a used lamp for cheap from someone here.

I have been following all the messages in this thread from the beginning, and this seems like an unusual way for an HP DLP TV to die. It's almost always a light engine defect that causes owners to give up. Also, I have seen some pretty odd symptoms resolved with a new lamp.

Good luck.

-Dave
post #10776 of 10880
Quote:
Originally Posted by DPlettner View Post

If you are lucky, it is the light engine slipping out of alignment. Have you moved the TV recently?
I recently pulled the stand that it's on out from the wall to adjust some wiring for other things, but that's about it. I guess I'll see if I can find some time to take it apart and adjust the light engine, assuming that's not terribly difficult. Thanks for the info!
post #10777 of 10880
The procedure is described in the service manual (although it could be clearer). If you do not have the service manual, send me a PM with your email address and I will send it to you.

-Dave
post #10778 of 10880
Quote:
Originally Posted by badbrass View Post

Well, fooey! My beloved md5880n has finally died after seven years of nearly flawless performance. The red "lamp" LED flashes twice, then the red "overheat" LED flashes twice, then the cycle repeats....
Quote:
Originally Posted by DPlettner View Post

About the only things I would suggest are leaving it unplugged overnight and trying a different lamp ... I have seen some pretty odd symptoms resolved with a new lamp. Good luck. -Dave

I received a new lamp from Electrified on Friday evening and that solved the problem. Many thanks to Dave for the suggestion! $75 for a new lamp easily beats ten times that for a whole new TV. Interestingly, this is my third lamp. The lamp that came with the TV lasted six years. The second one, also bought from Electrified, lasted six months. Hopefully, this one will last longer, or I may need to stock up while they're still available.

Thanks again, Dave!
post #10779 of 10880
Quote:
Originally Posted by DPlettner View Post

The procedure is described in the service manual (although it could be clearer). If you do not have the service manual, send me a PM with your email address and I will send it to you.
-Dave
I do have the manual already, got it from someone offering it in this same thread a few years ago. Thanks though! smile.gif
post #10780 of 10880
Quote:
Originally Posted by badbrass View Post

I received a new lamp from Electrified on Friday evening and that solved the problem. Many thanks to Dave for the suggestion! $75 for a new lamp easily beats ten times that for a whole new TV. Interestingly, this is my third lamp. The lamp that came with the TV lasted six years. The second one, also bought from Electrified, lasted six months. Hopefully, this one will last longer, or I may need to stock up while they're still available.
Thanks again, Dave!

Glad it worked! I think it is almost always worth trying a new lamp if the problem involves no picture, espcially since lamps are now so cheap. I remember when they were $350.

-Dave
post #10781 of 10880
After almost 7 years and only 2 bulbs, my 5880 is still going strong, but the bulb looks now like it is just about ready to go. Reading about the issues other members here have had with 3rd party replacements bulbs lasting only 6 months or so makes me a bit leery about sinking the $$$ into a 7 yr old set. If anyone here has a NIB OEM HP bulb for sale cheap I may be interested - please PM me. Otherwise, it may be time to retire this set and embrace the socially popular thin is in attitude...
post #10782 of 10880
Howdy! Was wandering by and thought I'd say hi, especially since I saw Dplettner, lord of the thread, posting. smile.gif You are probably 50% of the reason why many are still using this TV! Pretty cool...

My 6580 is chugging along...I had a visit from a major electronics company (gathering info on how customers setup and use their home entertainment centers, for future products) and they were both impressed by my TV, and amazed I was still using it. smile.gif
post #10783 of 10880
I'm looking for a good mainboard for my 5880. Everything must work, including both HDMI ports. I'm willing to pay a reasonable price, so PM me if interested. If nobody has one available, I'll wait a while and follow the thread to see if one comes up. I'm in Boise, Idaho, and if anyone nearby has a dead TV, I can do the disassembly.

Both HDMI ports on my set pretty much died last week-- my computer still talks to them, although the picture is darker than it should be, but my A/V receiver and Blu-ray player both just throw up a green screen on either port. Right now I'm using component for the Blu-ray, and the picture is fine (as good as can be expected from analog anyway), as is OTA broadcast.

Thanks,
Wayne
post #10784 of 10880
Quote:
Originally Posted by Danabw View Post

Howdy! Was wandering by and thought I'd say hi, especially since I saw Dplettner, lord of the thread, posting. smile.gif You are probably 50% of the reason why many are still using this TV! Pretty cool...
My 6580 is chugging along...I had a visit from a major electronics company (gathering info on how customers setup and use their home entertainment centers, for future products) and they were both impressed by my TV, and amazed I was still using it. smile.gif
Sorry I missed your post. AVS notifications seem to be hit or miss.

Glad to hear your TV is still working! Mine still has a great picture too.

I really like the Panasonic plasma TVs, and now I see conflicting reports that Panasonic is exiting the TV business. I may need to replace my working 5880n if I want to get one of the last Panasonic plasmas.

-Dave
post #10785 of 10880
Quote:
Originally Posted by waino View Post

I'm looking for a good mainboard for my 5880. Everything must work, including both HDMI ports. I'm willing to pay a reasonable price, so PM me if interested. If nobody has one available, I'll wait a while and follow the thread to see if one comes up. I'm in Boise, Idaho, and if anyone nearby has a dead TV, I can do the disassembly.
Both HDMI ports on my set pretty much died last week-- my computer still talks to them, although the picture is darker than it should be, but my A/V receiver and Blu-ray player both just throw up a green screen on either port. Right now I'm using component for the Blu-ray, and the picture is fine (as good as can be expected from analog anyway), as is OTA broadcast.
Thanks,
Wayne
Hi Wayne,

Several years ago I lost one HDMI port and replaced my mainboard. The old mainboard is in the garage and it should work fine with the remaining HDMI port. If you want it, you can have it for the cost of shipping.

For me, swapping the mainboard probably took around 4 hours. I understand why you would want to hold out for a mainboard with two working HDMI ports if you are going to invest that much time. However, if you do not have any luck finding one, you should be OK with a single HDMI port and a cheap HDMI switch.

Of course, there are no guaranteess that my old mainboard still works after all these years, but I expect that it will. It does have the latest firmware.

Send me a PM if you are interested.

-Dave
post #10786 of 10880
Hi Folks,

My beloved 5880 has finally given up the ghost. frown.gif It seems like a lamp/power related issue - first the picture's brightness would flicker, then the two-left-four-right flashing red LED code would come on, and now the lamp won't fire up at all. I've tried replacing the lamp a couple of times and some of the power supply modules but all to no avail. I've decided I'm not going to spend anymore time (or money!) trying to fix it. So, if anyone here would like to come and pick it up from San Francisco and harvest it for spares you can take it away for free. The light engine is good - no pixelation or any other symptoms I've read about here. I also have the matching stand if anyone wants it. I might be willing to part it out, but likely not for fre (time is money!)

Send me the PMs!

Thanks!

ky
post #10787 of 10880
Quote:
Originally Posted by kyris View Post

The light engine is good - no pixelation or any other symptoms I've read about here.

I have not seen many people offering working light engines. I suspect there might be some interest, but it could be a bit late in the game. It will be interesting to see if anyone takes you up on your offer.

I am sure that Wayne would love the mainboard.

-Dave
post #10788 of 10880
Quote:
Originally Posted by SeeD View Post

450Good day!
Looks like my 58" HPTV is a goner. Half the screen is blocked off by "digital bits" and the other half is cyrstal clear. Bought the TV back in 2005 and had the light engine replaced 1 month after purchase. I have 3 spare bulbs that will go up for sale in a few weeks. Please let me know if there is any interest. Thanks!
Mike

I have this exact same problem now with my 5880. After some research I can tell you the following:

New light engine, approximately $1400.
http://www.partzu.com/L1798_60003_Engine_assembly_For_58_inch_high_def_p/l1798-60003_new.htm
http://www.everprint.com/online/SimDetail.aspx?partno=L1798-60003&l=en-us
http://www.impactcomputers.com/l1798-60003.html

Labor to instal, at least a couple hundred.

Top of the line new Mitsubishi 73" DLP, $1500.

This TV has done me well for almost 7 years, but the repair just isn't worth it. Sad day.

PM me if you want to pick a free 5580 up in LA for parts. Also have a brand new lamp and a half used second one I'll part with cheap.
post #10789 of 10880
They actually have light engines available? I didn't find anything when I looked earlier this year. But you're right. The cost doesn't make it worth the effort to repair the TV.

You have the same failure mode that I think 5 of us had/have. All within about 8 months of each other after 7 years of use. I wonder what component is aging out?
post #10790 of 10880
All of these failures are starting to get me a little worried about my beloved 6580. I am hoping that my relatively cool basement will help extend the life of this thing. My guess is that the majority of the problems with this set are caused by heat.
post #10791 of 10880
Quote:
Originally Posted by rsambuca View Post

All of these failures are starting to get me a little worried about my beloved 6580. I am hoping that my relatively cool basement will help extend the life of this thing. My guess is that the majority of the problems with this set are caused by heat.
I agree that keeping it cool seems to help. I have had the back panel and the two small front covers removed from my TV for years.

-Dave
post #10792 of 10880
So I've had my 5880 for about 6 years now with hardly any issues until now. A week or two ago it started making a weird "moaning" noise when the TV is first turned on. The noises are kind of random and somewhat sound like interference. It seems to go away within about 5-10 minutes, but I've also heard it start up again after the TV has been on for a few hours. From what I've read after searching this thread, it sounds to me like it's probably the color wheel. Does HP even still service these, or is it possible to get a cheap color wheel somewhere and replace it myself? (I don't have a whole lot of experience with this kind of stuff, but I can follow instructions if it's fairly basic assembly) Just trying to decide if I should give in and buy a new TV, or if this one might be worth the time/money to repair it.
post #10793 of 10880
Hi Tigga,

I think it is more likely to be a cooling fan than the color wheel. IIRC, the color wheel has a rotational bearing similar to that of a hard disk drive, and I do not recall ever reading a report of a color wheel failing like that, but it sounds like you found a post or two, and I would be happy to comment if you provide the links.

I have personally had cooling fans make noises like you describe and then fail, which is why I think it is probably a cooling fan. There is one cooling fan right behind the lamp, and another visible when you remove the back panel.

I recommend that you move the TV out and take off the rear panel. See if you can identify the source of the sound. If it is a cooling fan, you should be able to replace it. I think one or two people have replaced cooling fans in the HP DLP sets, and you can probably find a few posts on the subject in this thread.

If it's a color wheel, it's probably time to get a new TV.

-Dave
post #10794 of 10880
Thanks Dave. I was kind of looking forward to a new 73" 3D DLP, but if my HP can be fixed with a $20 part then it's hard to justify spending $1k. The posts I could find on here seemed to mention the color wheel and speakers, so the color wheel seemed more likely to me. The noise does seem to be coming from right behind the lamp though, so hopefully it's just a fan. I couldn't find the exact model number (9GH1212M404), but I found 9GH1212M402 so I'm hoping that will work.
post #10795 of 10880
Here is a used one from an HP set:

http://www.ebay.com/itm/HP-9GH1212M404-FAN-DC12V-0-13A-MDL-MD6580N-/180900960287?pt=US_TV_Boards_Parts_Components&hash=item2a1e89981f

I am not sure whether I would try an exact-match used fan or a close new fan. You can always get the new fan, but fans from HP sets might be harder to find.

On my TV, I keep the front covers off to help cooling. Note the popsicle stick holding the lamp cover saftey switch.

If you look very closely with a flashlight, you will see the fan behind the lamp housing. The light engine is to the right as the lamp projects light into the light engine. You should be able to isolate the sound pretty closely.

-Dave


post #10796 of 10880
I've got a light engine (probably defective) you can have. It has the fan still attached. It came from my MD5880 that failed with the "bottom half of screen white pixel" problem. Send me a personal message and we can work out the details if you're interested.
post #10797 of 10880
Hi Dave, it's me again. biggrin.gifredface.gif
So I actually ended up going with the same fan you linked above even though it was used. Today I got the back panel removed and replaced the fan behind the bulb, turned the TV back on, and it was still making the same noise. I then tried unpluging both fans at separate times just to be sure. Both times the TV started up and showed a picture for maybe 2-3 seconds along with making the same noise, then turned itself off and started flashing red lights (I assume because it realized a fan was unplugged). I also tried replacing the bulb with an old one I saved that still has just a little life in it, but that didn't help either. I'm not sure if I mentioned this in a previous post, but before all of this I had also tried resetting the settings to factory default, turned the internal speakers off, and even fooled with the picture settings like brightness and r/g/b levels. I tried listening for the noise again while I still had the back panel off and it sounds like it's coming from somewhere very close to the bulb and that fan, but it's obviously not either of those. I also realized the other day that temperature does seem to have a bit of an effect since the noise seems to be much worse if it's cold in the room. Just thought I'd see if anyone might have any other ideas before I start looking for a new TV and maybe see if I can scrap this one for parts.
post #10798 of 10880
Hi Tigga, it sounds as if it's likely the color wheel. Just some thoughts: have you tried holding a piece of hose to your ear and probing around, as auto mechanics do to pinpoint noises? Just to make sure it's not the fan you installed (or to check out the one you removed), you could power up the fan outside the TV and see if it's quiet. A while back I measured 7.2V of drive voltage on one of my fans, and they're rated at 12V, so if you apply voltage within that range you could see if it spins quietly. I don't recall which wires had the drive voltage and which one was the tach feedback, but would guess that red is +, blue is -, and yellow is tach. I'd first do a quick check on a fan in my TV with a voltmeter to be sure. You're right that the TV will shut down if it does not detect a spinning fan. These TVs use the tach output as feedback to adjust the drive voltage to keep the RPMs at 1200.

Hi Dave, sorry that I missed your offer of your main board. Up to about 3 weeks ago I was checking the forum regularly, but stopped because kwarner was kind enough to offer his main board. (You're right--email notifications of forum traffic are spotty at best!) His board is installed and working great! Thanks to both of you! Now I have to dig into my old one and see if I can find a burned up part. Yes I'm a geek. rolleyes.gif

Later,
Wayne
post #10799 of 10880
Tigga: I am sorry it was not the fan, but I think it was worth a shot. I agree with Waino that it is probably the color wheel since there is not much else left that would make noise. Unfortunately, I think it is probably time to look for a new TV. You might want to check out the Panasonic Plasmas. They are very good, and I read the Panasonic may be scaling back on TV production.

Wayne: I am glad to hear you are up and running with a replacement mainboard!

-Dave
post #10800 of 10880
Thanks again for the help. I definitely agree that if there was a chance it was only a $20 fan then it was worth a shot.
I've tried searching for this, but haven't had luck finding an answer... With the color wheel making this noise, does that mean it's likely going to die soon, or is it more likely that there's still some life left in it and it's just going to make noise? I'm just somewhat debating if I'm better off trying to scrap it for parts, or maybe giving it to my 16 year old neice or keeping it for a spare bedroom. It's rather loud and annoying to me, but I'm sure it would be better than nothing for her if it might still have some life left despite the noise.
FYI, I've been eyeing a new 82" Mitsubishi DLP now (http://www.paulstv.com//DLP-Televisions/Mitsubishi-WD82740.asp). I still need to go see it in person, but this seems to be the best I've found based on online reviews, and I'm hoping I can find a sale on Black Friday. smile.gif
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