Samsung PS-50q97HD Led flashes and stays on, but no picture

[gangerlv]

Hi,
got Samsung PS-50q97HD Led flashes and stays on, but no picture. Opened up and there was C4712 popped. Replaced that and still nothing. Got green led on Ysus. All the fuses ok, had a quick look no shorts on X-main board.
Does anyone has any ideas?
This is my first plasma, dont have much clue whats were :)
Cheers
Arthur