Half black screen on projection tv

Half black? top/bottom or left right?

The set is rather old--a old trick to use is to connect a fan to the rear of set with the back off--it may extend the life of the set and give you some more use out of it.

I have seen a lot of these sets and never one with the problem you describe. If only a picture top or bottom is missing it may be vertical or if you are seeing what looks like a full picture with top or bottom black it is a Blanking problem--may not be easy to find...........

Try adjusting your focus&screen control Block-R/G/B 3 on top are focus and 3 on bottom are screen drives to the Tubes R/G/B you will have to remove front Panel on TV thats where the control Block is. You need to also resolder (FBT) flyback Transfomer Pinns.

It sounds like a high voltage loss such as a flyback transformer or high voltage splitter. No quick fix.

Power will not come on for rca p52770EB tv. I used to hard time to turn it on. Now it is dead.

your lamp has gone bad your going to have to buy a new lamp for it

Check the lamp to see if it needs replaced.

The convergence circuit is your problem and most times with this model the convergence power supply bd. is the problem.

If you have a DIRECTV - push the reset on the Directv receiver.

JB

I have a Toshiba 27D46 TV that comes on great.. but within 5 minutes goes black with a white line horizontal midway across the screen. Any fix solutions? HELP..!!! Chip

I would contact RCA if the repair center dosent know how to troubleshoot this set. But I bet its an eeprom or ground issue. Contact RCA here at 580-634-0151 or At https://www.rca.com/secure/service/contactrca/1,,,00.html Good Luck