My RCA TV blacks out ever few seconds. The sound is there but every few seconds the screen goes black.

LG LED TV has no picture (black screen) but still sound ...

www.tomsguide.com/answers/.../led-picture-black-screen-sound-fixed.ht...

7 days ago - My 32' LG LED TV has suddenly lost picture! The sound is all right but theScreen is pitch black. After switching it on the picture flashes for a second and thenthe ... LG LED TV has no picture (black screen) but still sound - can it be fixed? Tags: ... a touch on the screen reveals nothing so it's not the back light.

Monitor going black after 2 seconds [Solved] - CCM.net

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Oct 9, 2012 - Brightness goes down, display draws less juice, and you can at least use .... it's the LCD's Inverter ... you have to replace it for it to go back to ... If the screen is turning off every two seconds or so and then it comes ... i turn my tv on it comes right on, but then after a few minutes turns off, .... Digital Trends for LG. No display in monitor
Jan 11, 2013
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TV with Black Blank Screen Repair How to Troubleshoot ...

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https://www.youtube.com/watch?v=kFdVi2ejfzA

Assuming it goes black after using the tv for a few minutes its probably a bad capacitor on the power board inside the Tv but there are a few other things that can cause this but not enough information to determine

After the screen goes black, do you still have sound or you have none but a blank screen? If you have no picture and sound does the power LED in front of the tv indicate that the set is on, or does it go into standby? Please provide this info so that I can help you with your problem.

Sai.

sounds like the sceen is dead, if you are receiving nothing on screen, then it sounds like either a component and/or screen is gone... however, check the tv input to make sure it wasnt acidentally switched to an input channel with nothing selected... if that does not work, call local tv repair or mfg customer service tech. if under warranty, have repaired or replaced. without physically seeing tv, it is hard to diagnose issue outside of information given. could be simple board replacement or could be screen.. but check input first, if a dvd player plays, then it could be just component or input on wrong selection

check your capacitors cp150 114 120 if any of them is puffed up on top it is bad replace all 3 cap. 2200uf 1`6v and two 220uf 35v. also resolder FBT pinns.

Resolder FBT pinns flyback transfomer on deflection board also CK capacitors 3 of them cp114,120,150 if anmy of them is puffewd up on top it is bad.cp150 2200uf 16v other 2 are 220uf 35v replace all 3.

Sounds like power supply. Probably time for a new tv. You have already got almost 20 years service.

My goes off a few seconds after turning it on. It does make a funny sound, like static on the tv.

Sounds like the vertical area like Output, but I would look for bad caps first and resistors. In this area

I had the same exact problem.
I removed the bulb and cleaned it. There is a small screen at the top of the bulb and it was covered with dust. Once it was cleaned I replaced the bulb and it solved the problem.
Thanks to those who posted the solutions