Samsung DLP LED HLS5679wx/xaa Picture has gone bad? - AVS Forum
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post #1 of 6 Old 12-08-2011, 05:45 AM - Thread Starter
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Hello Everyone (New Guy here)

I have a Samsung DLP LED HLS5679wx/xaa
I have read and been told many facts about my TV (even from Samsung, imagine that) which are not true, anyway

Fixed the whole power on/off cycling issue awhile back (bad capacitors)

I have another problem now. The screen has very sporadic blue flashes/flickering or distorted lines/shapes (only happens during certain times) I guess it depends on what image is being displayed on the screen, although I tested and this problem occurs thru all inputs. I took the whole TV apart in hopes to find something obvious, no luck.

I have heard of people replacing the light engine, but mine is fine, I don't have a color wheel anyway (I have red, green, blue LEDs)

I guess these are my possibilites:

Audio/Video Analog Board
Digital Board
DMD board
DMD (DLP chip) I hear this rarely goes bad?

I also attached some pictures
LL
LL
LL
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post #2 of 6 Old 12-08-2011, 07:39 AM
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I had the same issue this past summer. I too had fixed the power cycling issue (twice in 2 years). I don't believe it's the power board this time but admit I can't be 100% sure.

I immediately got a Mits 73" to replace it and "gave" the Samsung to the delivery guys with the remote, manual, service manual, all notes and forum print outs and wished them the best with it. I mainly just really needed it taken away.

With the lamp based Mits, I see rainbows every now and again unlike the LED-based Samsung and I'll of course have to change the lamp every so often. Oh well. I know the LED-based system is suppose to be long life (that's one reason I got the Samsung) but it's only going to last as long as all of the other components in the HDTV itself.

I gave the 73" to my brother after testing the lamp-based DLP "waters" and now have the 92" Mits. After 4-5 years, I will more that likely go front projection once wireless 3D HDMI works like butter or better yet, get a new OLED 92" flat screen or whatever the new/not too expensive thing is in 4-5 years from now.
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post #3 of 6 Old 12-08-2011, 07:52 AM - Thread Starter
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But do you have any advice on my picture issues?
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post #4 of 6 Old 02-07-2012, 04:11 PM
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I have the same set, with similar issues. Mine strobes in in some picture settings, and a blue mask with a slight spiked fence on the top edge grows up from the bottom.
From your pics I see it seems to also be related to the blue gun.
It is likely the led driver board (unavailable). You can also try this to isolate:
power off, remove ac cord, remove the 2 screws that hold the light engine chassis in, and the dvi plug on the left so you can slide the assembly out a few inches. On top of the led light assembly is a small circuit board. The connectors from left to right at blue, green, red. These are all different pin count connectors, BUT the connector at the led module end are all the same. Gingerly squeeze the plug at the led module end and remove the plug from the blue and green leds and swap them at the led module end. slide the light engine back in, reconnect the dvi cable. Turn it on and watch your picture. Now obviously the colors will all be off, but the artifacts and smearing color is what you need to look at. If it remains blue, then there is something strange with the blue led. if it changes to green, then it is the led driver board, or possible the dmd board that generates the color signals. If I had a service manual I would check the drives for the 3 colors where it leaves the board as that couls also be the culprit.
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post #5 of 6 Old 10-06-2012, 01:54 AM
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Hey! This is the exact issue I'm having! Ever get it fixed?
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post #6 of 6 Old 06-01-2014, 02:59 PM - Thread Starter
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nope did you, about to scrap it I guess
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