Hitachi 42pd6600 won't power on sits with just red led

[madjock]

Hi All,

I have an issue that I can't seem to get to the bottom of.

My 42pd6600 will not switch on, more accurately after powering on from main switch it instantly goes into standby mode ( no picture just red led) and won't come out of it.

If I leave it unplugged from the mains for a day or two, sometimes it will power on and respond normaly via remote and on screen buttons but after a period of time ( maybe hours sometimes a couple of days)  it will drop back into the above symptom.

I have swapped out the power board with a new one , symptoms still the same not sure if its a logic board or main board issue so any help would be a bonus.

Thanks in advance

MJ