RCA 50: HDTV, just started shutting itself off and won't come back on for several minutes or over an hour what could cause this

SOURCE: TV Turns off and on

How long since the last time the bulb was replaced? It sounds like the bulb is overheating and triggering a safety shutdown.

It's probably in need of nothing more than a good cleaning (open it up, clean off the boards with a can of air) and *may* be time to replace the bulb.

SOURCE: Samsung HL-R5067W "Powering Down"

the hlr series had a few problem with intermittent turning off. one was the lamp door cover switch, the other was the thermostat.. neither one is very costly and a good tech should be able to replace bothe parts at the same time..

SOURCE: RCA P52937SG Will not turn on, only makes clicking sound.

I had the same problem with mine. There are two voltage capacitors in there. A low and high. The hig voltage is bad. I had to have mine in the shop. Cost about $400

SOURCE: HP Pavilion MD5020N 50 in. HDTV DLP TV keeps shutting down

ok this is what you do folks.... un-plug the tv from the power supply. once that is done hold the power button down on the side of the television for 30 seconds. this will release all electricity out of the tv.... then before you plug it back in hold the channel down vol up button along with the power button at the side on the tv this should reset the tv and it will start up automatically on video one. Select your source and scan for your cable channels again. If the problem is not solved then contact someone to come and clean the filter for the tv because it may be clogged along with this it can be the color wheel and may shut itself off like 3 times until it feels it is right.

SOURCE: RCA R52WH74 that will shut itself off

Replace 3 capacitors on Deflection board its the bottom left hand side cp150 200uf 16v use 25v capacitor and cp114 cp120 in same circuit 220uf 35v. You will see cap cp150 if it is puffed up on top they are Bad. Call Mats Electronis 1-800-628-1118 Radio shack might have capacitors.