NEC PF32W01 (Daewoo 3261H Chassis) TV dead

[johndelf]

Dead TV. Was left to stand for several days (unplugged) and when powered up again actually worked! Was left on for an afternoon, then switched off. Following day was dead again. All voltages appear to be Ok, however no FB signal (1000Vp-p) but collector Q404 shows 140v. DPL3915A reset pin shows only 3.75v not 5v (as per circuit diagram), but not sure if this is sufficient for logic 1. Also, connecting power and pressing power button causes LED to go green but no other buttons on the set work, e.g. cannot power off with the set power button (each time a button is pressed on the set OR the remote, the LED should go red, then back to green, but this is not happening). Standby 5v Ok and running 5V also Ok (after pressing power on button). Check relays and these appear to be Ok. All power supply voltages appear to be fine. Suspect DPL3915A (I602) but not sure. Has anyone encountered this problem before?

[johndelf]

Sorry wrong chip info - should have been I701 - ST92195A