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HLR6768W - Right half of screen goes black

by mgoddard1 / December 30, 2009 10:54 AM PST

I have a 4 year old 67" Samsung DLP which has worked pretty well other than having to replace the color wheel twice. Over the past 6 months it's developed a new behavior where the right half of the screen goes completely black and stays that way until I power cycle the tv. This usually happens once or twice a day and it is driving me nuts. Short of replacing the DMD board which isn't even available for purchase anymore on samsungparts is there another fix for this? I see that samsung is replacing defective dmd boards that have the white dot problem so is there any chance they would cover this design or manufacturing defect as well?

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HLR6768W - Right half of screen goes black
by Samsung_HD_Tech Samsung staff / January 1, 2010 12:24 PM PST

mgoddard1,

Sorry to hear you're having this issue.

Service would have to determine if that's an issue that would be fixed under special conditions, and I couldn't give an indication as to why only half the screen would be turning off. If you want, try calling Samsung Parts directly at 800-627-4368 to see if they might have the part you're looking for, or if it's possible for a service technician to obtain one.

--HDTech

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RE:
by mgoddard1 / January 2, 2010 12:48 AM PST

HDTech,

Thanks for the info an I'll call Samsung parts on Monday. According to their website the DMD board BP96-01315A is no longer available which is pretty disappointing but maybe calling directly will make a difference. I have the service manual for this TV and looking at the schematics the DMD board has 2 processors on in in a master/slave configuration. If the slave processor decides to go off into the weeds then that would explain why the right half of the screen goes black. This happens on all the video inputs as well and white screens such as the Wii menu seem to trigger this condition more than anything. If I can't get this part then I'll probably get another DLP since I need a large TV for the size of the room. Since Samsung decided to get out of the DLP market despite having superior technlogy with their LED light engine it looks like my only choice is Mitubishi these days.

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RE:
by Samsung_HD_Tech Samsung staff / January 2, 2010 8:43 AM PST
In reply to: RE:

mgoddard1,

Sounds like a good course of action. They're the last standing major player in the DLP arena. You might also consider that parts may also be available, but if you do go that route, I would definitely recommend looking at the return policy in the event the part doesn't work or fix the issue.

Keep me posted.

--HDTech

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RE:
by mgoddard1 / January 4, 2010 6:31 AM PST
In reply to: RE:

I talked to samsung parts today and DMD boards for my TV are on backorder until February. The price on that is $530 and it has a $150 core. My other option is to replace the whole light engine which is $950 and it has a $350 core. So for basically $220 more I can replace all the guts and not have to deal with realigning the DMD board. Having already replaced 2 color wheels, realigned the light tunnel, and replaced the bulb in this beast I can swap the guts out in 15 minutes.
It looks like the dlp white dot issue is completely unrelated to my problem so it probably won't be covered. The DLP white dot issue appears to be a defect with the DLP chip itself, not the DMD board. Tommorow I'll call Samsung customer service and who knows, maybe I'll get lucky and my defective DMD board will be covered even though it is out of warranty.

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Right half of screen goes black
by agenerallee / March 26, 2011 2:14 PM PDT

I also had half my screen go black anywhere from minutes to hours after I powered on my TV. Once it had gone dark a power cycle would return the picture but generally for only about 10 minutes. I had purchased a five year warranty with the unit but the company I had it with went out of business. I had already replaced the color wheel and bulb in the first 3 years of owning the TV and didn't really want to invest another $900 in a new DMD board. Since this seemed like a overheating issue I decided to try putting a 10" inch box fan in rear of unit that I had purchased for $15 dollars at the local hardware store. I simply put it right up against the vents on back of TV blowing out,(must be blowing out). Since doing this, the screen has not had a problem. I have run the TV for 24 hours straight and the screen has never gone black again. The fan was much cheaper than a new DMD board so try this before buying any new parts!

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