I HAVE A PHILLIPS MODEL 50P8341 REAR PROJECTION TV THAT COMES ON ,THE RED POWER LIGHT BLINKS FOR A SECOND AND THEN CUTS ITSELF OFF

Make sure all the fans are working correctly. If the problem persists then it might be the ballast, the power supply or a bad temp sensor.

This is probably NOT a chip. Put the model number in a search engine with the words "power supply"

Any chirping sounds from the TV?

Make sure it is off when you unplug it, do not use for at least a few days then.try again. It worked for mine.

Same problem... I pulled out the second electronic board going from right to left and see a burned diode at position 3307. I wanted to know if anyone has a schematic of this TV and could tell me the numeric value of the part in position 3307. It would be appreciated it you could let me know.Thanks...

Your Red CRT may be on its way out. Try turning down the G2 screen control on the red CRT just a little. That should help for now. A new red tube wil be a reality in the future.

Considering that in both cases, the set will turn on but not stay on, indicates either a condition of overheating due to a failed fan or it could be a component going into thermal runaway in the power supply itself that is causing the fault.

This is not a safe area to probe around in since there are capacitors that may contain a charge for a fairly long time.

If the fan cannot be heard, this is probably a cheap repair, otherwise, get an estimate first.

I have the same problem. Did you find a solution?

bad connections or bad regulator

the tv will try to reboot a few times. just let i try and eventually it will start blinking red. if you could count the red blinks then i can further assist you.