samsung pn51d450 x main

[Nixpaints]

Hello,
I have a samsung plasma that is showing signs of a bad x main board. It has the typical pixelation/dim screen symptoms. When cold, half the screen is black, it slowly dissipates as it warms up but never fully goes away. The unusual symptom is that a black "hump" exists with no pixels on the bottom right of the picture approx 6" X 3" that distorts the picture immediately around it. I can t find anyone with a similar black "hump" symptom.
Ever seen this?

Lee

[tom66]

Re: samsung pn51d450 x main

I can't expand your image, but that is pretty much the symptom of a bad X-main. Very strange that your set still works. It is rare for the TV to stay on when the X-main goes bad because there is an error detect on Samsung plasmas for the X-main.

[Nixpaints]

Re: samsung pn51d450 x main

Would a faulty x main explain the black distortion on the lower part of the screen?

Any recommendations on where to purchase the board?

Thanks

[tom66]

Re: samsung pn51d450 x main

Yes, the whole panel does not always sustain properly with a bad X-main. Other symptoms include a purple/maroon tint, blurryness on fast movements, and a static field of "stuck" pixels over objects like the menu. However, I do have to say, your problem does look like gas leakage, which could mean there is a small crack in the panel. Before purchase of the X-main, inspect the panel carefully for cracks.

Places to buy: ShopJimmy, eBay... also try searching Google. Look for the LJ9x-xxxxxx[A-Z] number on your board. You've got to match that up. Don't order by an LJ4x number.

[Nixpaints]

Re: samsung pn51d450 x main

I have thoroughly looked over the panel and it seems to be fully intact. No damage that I can see. With gas leakage it would be correct to assume that the black area would grow?