philips 42pf5520d plasma, not the usual click of death issue

[KountZERO]

Been given one of these dreaded machines to use as a kids den display for their console. Its exhibiting a weird behaviour in that when in standby, the screen goes on and off randomly and the green led flickers. I've pulled the board out and all the caps look good, even the ones under the heat sinks. Also ive been over the board looking for cold solder and burned smd resistors on the back.

The caps on it are samxon so less likely to be nasty

Where should i be looking for issues in the standby circuit?

[newtothis]

Re: philips 42pf5520d plasma, not the usual click of death issue

Firstly lets see what voltages are at the connector from PSU to Main, Meter on DCV settings at each pin when attempting to power up.

If there are voltages written next to connector let us know what they are and what reading you get for each one.

Also pictures of your boards and overall layout please