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Samsung DMD board replacement - Page 4

post #91 of 845
I just ordered my part from Samsungparts.com. It is a little more expensive, but it appears they have them in stock. I'm not going to fret about an extra $10 if I can get these damn spots of my screen.

Now, I just hope I can pull off the surgery. Thank Pez for the directions....
post #92 of 845
Hello everyone and thank god for this thread. I thought i was alone out there!
I noticed most of you are having problems with the white dots has anyone seen this? I have a samsung 50" dlp model# hlt5076s. Do you think that is the dmd board?
LL
LL
LL
post #93 of 845
Quote:
Originally Posted by anthonyclewis View Post

Hello everyone and thank god for this thread. I thought i was alone out there!
I noticed most of you are having problems with the white dots has anyone seen this? I have a samsung 50" dlp model# hlt5076s. Do you think that is the dmd board?

Wow... that's an odd thing you've got going on there.

Look back at post #34 in this thread. I posted a picture from the service manual stuff that I have for my TV. From the documentation I have, it would seem that a bad DMD *board* results in problems that run the full length or width of the screen and usually repeat in some kind of pattern.

It looks like you definitely have pixels that aren't working there, so my first guess would be a bad DMD panel. (Like we're all experiencing with the white spots.) Since it's not the same thing though, I can't really rule out a possible problem with some other component.
post #94 of 845
Hey Guys/Gals,

I have a Samsung 42in DLP Model# HLS4266 and my tv is just beginning to have burnt pixil all around the edges. A few days ago I had one and now theres around 6-10 (& they are quite large). I bought my TV last feburary and when i called them about my problem the warranty had been expired for 6 days. I was reading ur post about how Samsung wont help any of you guys b/c its more or less will be intrepreted as admitting their guilt. However, when i spoke to them they told me that as long as I was within one month of the expiration of the warranty they would help me out. In addition they told me that in 2 days i would recieve a phone call and they would have a technician come out and try and fix my problem. So im not sure if this helps in any way but they did say that they would help me with my pixil problem...I guess i'll keep you guys updated on what happens...if you would like me to... Just let me kno..

DW
post #95 of 845
Thread Starter 
Quote:
Originally Posted by naseqp View Post

i gotta laugh to keep from cryin'....the parts place said they had the part when I went online and ordered it. Today I checked.....part is backordered.

btw........Joe....how you doing with your repair? We didn't mean to derail your thread.

I am glad to hear that others are making progress!

In terms of my TV status, I am still going through the approval process with Visa for their "extended" warranty repair. After submitting the rational for the repair online, I had to send in the sales receipt and explaination for the claim. After a week they contacted me and told me I needed a written repair estimate. In another day they should contact me with their resolution.

BTW the shop I brought the tv to for an estaimate has originally told me a month earlier that it needed a color wheel and light engine. However, the technician who handled me at the repair store , called Samsung to get the parts needed etc. The written estimate just replaces the DLP and DMD board: total cost came to $840.

For the record these are the same part numbers as Pez's eventhought my TV is a 46" unit -HLS-S4666W ( vers PB02). So it seems all these HLS PB02 units may have the same DLP and DMD boards.

DLP 4719-001981
DMD Board BP96-01636A

The labor cost was quoted as 300$.

I don't understand why the DMD board is to be replaced and did not wish to ask. It is likely that they order it assembled which then makes the replacement trivial.

Joe
post #96 of 845
Thread Starter 
[quote=anthonyclewis;15939469]Hello everyone and thank god for this thread. I thought i was alone out there!
I noticed most of you are having problems with the white dots has anyone seen this? I have a samsung 50" dlp model# hlt5076s. Do you think that is the dmd board?[/QUOTE

I am having a hard time deciding if the darker pixels are all one color or just reduced in intensity. Since the spots are not completley white or black, it seems that you are reflecting some of the light in these pixels. For that case I'd guess that it is a timing problem with the DMD board and/or color wheel. Here the mirrors are reflecting to the right place but the amount of light is reduced. This can happen if the synchornization is off. But I don't know the details of how the synchronization is done.

It could also be that the mirrors are not responding fast enough and reduces the full amount of light , or the mirror is stuck in odd position. The latter may happen if one of the control voltages (from the DMD) to the micromirrors is incorrect and has pinned the mirror to a near off position. That would again imply the real problem is the DMD board that supplies those voltages. Then another question is if the DMD is providing the wrong voltages to the mirrors has it in some way damaged the control of the mirror.

I'd suspect that the Samsung repair solution will be to replace both the DLP and the DMD board.

Joe
post #97 of 845
My TV is looking like this, although it does come back to a brilliant picture when it is turned off for a while and then when we turn back on, it will last about 1 hour, and then the screen will freeze with this picture.
Any Ideas?
Attachment 135486

It's a samsung hln 4365 wxix aa The repair shop it's at right now has given us a $650.00 repair estimate and the repair they feel is the light engine. The tv is 5 years old.
LL
post #98 of 845
I have an HLS4676S that I purchased towards the end of 2006. I have a flickering pixel about a 1/4 down dead center. Is this problem going to get worse? I sure as hell don't want to pay $500+ for a repair on a 2 year old TV. This should not be happening.

Does anyone know what DMD part # I would need for my set? I think my version is PB01 if I remember correctly.
post #99 of 845
SamsungParts.com only lists one DLP chip for the HLS4676S: 4719-001981

I can't guarantee that it's all 100% the same, but that's the same part as my HLS5086w (PB02) set. If the DMD Panel is the same, then I imagine the DMD board and how it's setup would have to be very similar.

I'll PM you about getting you a copy of the service manual stuff I have.
post #100 of 845
I realize I am one year out of warranty but it sounds like Samsung is aware of this problem. Are they doing anything to fix this? Will they cover any of the cost of repair?
post #101 of 845
Thread Starter 
Quote:
Originally Posted by PezJunkie View Post

SamsungParts.com only lists one DLP chip for the HLS4676S: 4719-001981

I can't guarantee that it's all 100% the same, but that's the same part as my HLS5086w (PB02) set. If the DMD Panel is the same, then I imagine the DMD board and how it's setup would have to be very similar.

I'll PM you about getting you a copy of the service manual stuff I have.

Be careful since the pin confirgurations on the DMD board to the DLP are different on the PB01 and PB2 versions of PEZ's unit and my unit HLS 4666.
post #102 of 845
Quote:
Originally Posted by Joe Demuth View Post

Be careful since the pin confirgurations on the DMD board to the DLP are different on the PB01 and PB2 versions of PEZ's unit and my unit HLS 4666.

Can you elaborate on this? I thought the part numbers for both parts were the same?
post #103 of 845
Thread Starter 
Quote:
Originally Posted by PezJunkie View Post

Can you elaborate on this? I thought the part numbers for both parts were the same?

Sorry for any confusion. Our part numbers were the same. What I meant to say was that the PBO1 versions have a different DMD board than the PB02 versions where the pins to the DLP panel are in different locations. I beloieve that the manual you had also showed that the DLP panel for the PB01 version also had different pin locations than the panle for the PB02 version.
post #104 of 845
Thread Starter 
I ordered the DLP light panel on Wednesday from Partstore.com and it arrived on Friday ! I was surprised at how little packing it came in - only some bubble wrap around it in a very thin carbboard box !

Will install it next week sometime, and let you know how it goes !
post #105 of 845
Quote:
Originally Posted by Joe Demuth View Post

Sorry for any confusion. Our part numbers were the same. What I meant to say was that the PBO1 versions have a different DMD board than the PB02 versions where the pins to the DLP panel are in different locations. I beloieve that the manual you had also showed that the DLP panel for the PB01 version also had different pin locations than the panle for the PB02 version.

Oh I got ya... I thought you were saying that your set & my set were different, but I get it now.

Good luck on your swap!
post #106 of 845
Yes, good luck Joe. Hope it goes well!

You'd think something that delicate like that would be shipped in a plastic clam shell like Newegg ships OEM CPUs in.
post #107 of 845
Thank You Pez for leading the way.

I'm happy to report my 42" is back with its beautiful picture.

The backordered dmd came in Thursday......just had a chance today (Saturday) to make time to install. Pretty straight forward if you take your time. And you're right Pez...the ribbon cable was a pain. I used a large paper clip hooked under it so I could apply steady pressure to lift it out. There certainly wasn't enough cable to pull with your thumb and finger like the guy in the guide.

Have to admit to crossed fingers when I hit the power button on the remote. She popped on just like nothing ever happened.

Shame on Samsung for not being aware they probably have a bad batch of chips.

Thank you again Pez and Joe. I hope this thread helps others to solve their stuck mirror disease.
post #108 of 845
Not really a club I'd like to be a member of, but I'm here to sign up. Started today with 1 dot, then another appeared after it was turned off and turned back on. I was halfway hoping that it would cost to much and it was time for a new 1080p flat screen, but I can live with this one if I can really get it fixed for 200 bucks. Nice to have other people to lean on.
post #109 of 845
I forgot, but I've got an hls5086w, that I bought in November of 06. Lamp hours are almost 5300 I think so I've gotten quite a lot of use out of it in the 2+ years. Bad news is my bulb is probably not too far behind. Anyone remember the bulb life on these bad boys? My GF called Samsung about it and they said "Yeah, we've had a lot of complaints on that but there is no recall at this time". So a nice way of saying "go eff yourself".
post #110 of 845
Yeah, Swami Sammy sees a new bulb in your future if you successfully replace the DMD board. Still, if you gamble and win that's only about $300 for a 50 HDTV, not bad at all.
post #111 of 845

Found a decent place to upload all my Service Manual stuff online:

http://drop.io/HLS5086W
http://dl.dropbox.com/u/16526204/HLS5086w.zip


You can pull down individual files or there is a link on the right side to "Download ZIP Archive" which will get you everything in a .zip file.

"Disassembly Reassembly.pdf" is probably the most important, it's the step-by-step on how to swap various parts.

"Parts code list for each DMD Panel type.xls" is the Service Bulletin about the difference between the PB01 & PB02 models.

"Alignment Adjustment.pdf" has... er... Alignment & adjustment info. Also gives a list of all the service menu options.


Edited by PezJunkie - 8/26/13 at 10:06am
post #112 of 845
Thread Starter 
Pez, this will be a great reference for the forzen pixel community !

I have recieved approval for full coverage for the repair bill from Visa.

I will eventually repair this unit ... right now my refrigerator is having problems.

I am still wondering why the micromirrors in these HLS units seem to be failing. Based on the research paper Samsung published on accelerated testing, the micro-mirror failure occurs with elevated temperatures. So I would believe that the heat exchanger or the fan cooling the DPL panel is not working properly. Since you have a PC background did you ever check how well the fan was doing after you fixed your unit ? Could be that Samsung saved 50 cents by putting in a smaller fan that just does not have the hosepower to cool the DPL panel. Alternately, if the ambient room temperaqture is 5-10 degrees higher than their design point and the TV is placed in a confined area the heated air may not be cooling the DPL properly. Since I live in FL and my room temp is near 78-80 degrees , that could be significant. Any thoughts on these points ???

Joe
post #113 of 845
Thread Starter 
Quote:
Originally Posted by Quentin2 View Post

Yes, good luck Joe. Hope it goes well!

You'd think something that delicate like that would be shipped in a plastic clam shell like Newegg ships OEM CPUs in.

Just though I'd comment for others that after further inspection I see that the DPL panel has a glass cover built into it to protect the micro-mirrors.
post #114 of 845
Well, I completed the surgery and I now have a TV that is as good as new. No spots. I'm absolutely thrilled that I was able to get a "new tv" for $200. Thanks to Pez Junkie and Joe Demuth for sharing their knowledge, expertise and manuals.

I have no technical skills whatsoever, but this was pretty easy with the instruction manual. It probably took me 1.5 hours from unplugging the tv to powering it back up. I took my time too. If you have a wife/girlfriend around the house, it will be better to have her help you with some of the small wire disconnections....and to just have 2 sets of eyes looking at the instructions and the components.

Again, thanks to all. This made my weekend!
post #115 of 845
Quote:
Originally Posted by atljad View Post

.......If you have a wife/girlfriend around the house, it will be better to have her help you with some of the small wire disconnections....and to just have 2 sets of eyes looking at the instructions and the components....

Mine just looked at all the TV parts and shook her head....

But she sure liked the result.

Thought I'd throw some pics up for anyone that's interested. Various shots of before, after and what you'll see inside the TV.

http://tinypic.com/useralbum.php?ua=...LFoHl7Fw%3D%3D
post #116 of 845
Quote:
Originally Posted by PezJunkie View Post

I think so. I've got a service manual thing that I can share with step by step directions and pictures. It's mostly unscrewing a bunch of screws and unplugging a bunch of cables.

The worst part for me was getting the little ribbon cable plugged back into the top of the DMD board. (It's the only one that doesn't have a little plastic clip thing on the end.)

For the record, since previous posts mentioned the trouble with the ribbon on top of the board (disconnecting and connecting it), I chose to leave mine in tact during the replacement. If you have someone to hold the metal plate that covers/protects the board, you can just swing that piece up while you are replacing the DMD board. It was no problem, and once you get in that far, it doesn't take but a few minutes. I thought I'd give this a shot to avoid the known trouble that came with disconnecting the gold ribbon.
post #117 of 845
Hello everyone New to the forum and so much info on here cant wait to get my mind going again Thanks
Anyways I have a
Model: HL-S4676S
Ser: B1LC3CEL901467J
Ver: PA01

And by reading all this it seems I need a new DLP chip but
I Dont Know Which One? can anyone help me out I searched over and over
Thanks in advance
post #118 of 845
this was 71st post in this thread. Its a long one but I suggest you start at the begginning nd follow it through.good luck,welcome to the Stuck Mirror Club"....

Quote:
Originally Posted by Richard429 View Post

PexJunkie,
You have given me hope for my HLS-4266W.
I had already disassembled the three main boards and had photos ready to try auctioning parts on ebay.
My set started with the dead pixels (white) last fall and I replaced it with an LCD.
This would make a good second set if I could fix it for under 250.

Where can i find the PB01 versus PB02 info to deterime which DMD I need.
Originally Posted by PezJunkie
4719-001968 Type A (PB01 sets)

4719-001981 Type X (PB02 sets)
post #119 of 845
Quote:
Originally Posted by PezJunkie View Post

Found a decent place to upload all my Service Manual stuff online:

http://drop.io/HLS5086W

You can pull down individual files or there is a link on the right side to "Download ZIP Archive" which will get you everything in a .zip file.

"Disassembly Reassembly.pdf" is probably the most important, it's the step-by-step on how to swap various parts.

"Parts code list for each DMD Panel type.xls" is the Service Bulletin about the difference between the PB01 & PB02 models.

"Alignment Adjustment.pdf" has... er... Alignment & adjustment info. Also gives a list of all the service menu options.

PEZ AND JOE, you have been a big help, I'm also going to try this. First, I have HLS4676Sx/XAA, Version PA01, will the manuals you have online work for this model as well. I went the the Partstore and Samsung parts store and I come up with a part # BP96-01670A. Would you mind verifying this is the correct board. Thank you in advance.
Catbird
post #120 of 845
Quote:
Originally Posted by CATBIRD View Post

PEZ AND JOE, you have been a big help, I'm also going to try this. First, I have HLS4676Sx/XAA, Version PA01, will the manuals you have online work for this model as well. I went the the Partstore and Samsung parts store and I come up with a part # BP96-01670A. Would you mind verifying this is the correct board. Thank you in advance.
Catbird

BP96-01670A is a DMD board. It has a socket where the DLP chip (DMD panel) plugs in, but it does not include the DLP chip. If you're having the white spot/stuck mirror problem, then that is the wrong part.

On either of those sites, go to the list of all parts for your model and search for "DLP". The part that shows up when I look is 4719-001981. (same as the PB02 version of my set.)

The DMD board listed for your TV appears to be different than the one for mine, so the directions from my TV may or may not be helpful... I can't promise anything.
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