Faulty plasma panel? (small video inside)

[coss]

Hello,

Video

Samsung PS-42E7S, screen keeps flashing (dark in the mildle) with good sound.
Can this be a problem on the "plasma panel"?

I hear a sound click click click on the "Y Drive" board when the screen is flashing. If i disconect the panel from the "Y buffer" the noise continues but if i disconect the "Y buffer" from the "Y drive" the click click click stops.

Tested the Power board and its fine.
Can the problem be on the Y boards or am i wasting time because its a bad "plasma panel"?

Thanks a lot