Samsung PS50Q96HD X-main issue?

[PowerAmpFreak]

Hi all
Samsung PS50Q96HD plasma.
At first I thought this was the "famous" Y-buffer issue.
But looking at the screen it tells me more it's an X-main issue, right?
When powering up the set behaves like a cracked screen, certain random areas of the screen are completely black, but awake after a minute or so and grows more and more to a picture.
What do you say guys?

[tom66]

Re: Samsung PS50Q96HD X-main issue?

Good chance of X-main being bad. Can also be low Vs or Ve.
Do you have a scope to check drive waveforms from X-main board?

[PowerAmpFreak]

Re: Samsung PS50Q96HD X-main issue?

Vs and Va up to spec. Ve not checked yet.
Noticed that after 10 minutes of operation, everything was warm except for x-main heatsinks being all cold.
Will dig into the X board. Thanks as always Tom!

[tw2005]

Re: Samsung PS50Q96HD X-main issue?

I think there's some pico fuses on that too that may be worth checking