ambilight ok, sound ok, image ok if lit with flashlight.

Having same problem on Philips: ambilight ok, sound ok, image ok if lit with flashlight. For this one I don't know the issue yet but suspect power supply. Well, unlikely the fuse as I had this issue last week then TV came to life again few hours later, ’til tonight…

I had similar issue before on Panasonic TV going black and the more you wait the more it stays on, then red LED blinks.  For this one, it was one backlight LED which started to go away. Cold TV, contact is good enough. When hot, this white LED goes off, then I guess a probe shuts down the whole backlight and warn with red LED blink. Re-soldering this single LED saved the TV.