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Samsung R4252 Plasma Vertical Lines Than Strobe Effect

Hi,

I just got my hands on a Samsung R4252 42" Plasma TV... When I powered it on, I noticed some vertical greenish lines of various widths, 3 on the left side of the screen and 3 on the right... After doing some research, I figured that replacing the main logic board might fix the problem..

Anyways, I left it running for a while, hooked up to cable and it gave me a really good picture..

But after about an hour or so, the picture faded really bad and the screen started rapidly flashing with a strobe light effect...

Could this also be a logic board problem?? Or am I looking at something worse??

Any hints or info would be most appreciated.

Thanx.

Michale

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Further Info

Further info on this problem.

This morning, I hooked up a modified XBOX, just to further test... I got a pretty decent picture with a much less noticeable flicker, but still was there..

After about 10 or 15 minutes, the picture went haywire. Really bad flicker and solid green and purple verticle lines...

Here is a pic of the screen with the camera flash ON

http://mfccfl.us/temp/DSC00997.JPG

Here is a pic of the screen with the camera flash OFF

http://mfccfl.us/temp/DSC00998.JPG

What these pics don't show is the really bad strobe/flicker.. I tried to create a little MPG of the flicker, but it doesn't come out.. It just looks like the camera flash OFF pic.

Any hints or info would be most appreciated.

Michale

- Collapse -
Still further info...

Still further info...

After letting the TV sit for about an hour with the afore mentioned screen, I turned the TV off then turned it back on..

Lo' and behold, I had the original perfect picture back with the very minor (comparatively speaking) thin vertical lines on the sides..


mfccfl.us/temp/SamsungR4252.jpg

What do all these symptoms point to as the problem??

I am still thinking Main Logic Board, but want to be sure before I put out the money for a replacement.

Thanx again

Michale

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