Keep turning off and on with no picture and no sound

Luxor is a budget brand made in Turkey for the Swedish market. You likely have failing components, probably electrolytic capacitors. You put the set on, they warm up and fail. They can be replaced but you are better to invest in a new set by one of the major makers like Samsung, Sony or LG. A quick search shows they have some history of faulting

https://www.google.com/search?q=Luxor+tv+keeps+losing+picture

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Your problem is most likely a fried circuit board. I always connect my good electronic to a back up battery. but your problem might have been storm or surge related, I would take it to a repair center and get an estimate.

the lamp is bad you need to replace it

You probably have blown capacitors on the PSB-power supply board. Recaping with new UF caps works 90% of the time. The set turns itself of into a fault protection to keep from damaging more components internally. A few bucks a soldering iron some solder should do the trick.

Hi! the trouble indicates that your television's picture is the culprit, have your unit check by a qualified technician for verification.

Picture tube needs to be checked.

The power will not stays on, it keeps turning off by itself

IThe back;light is not working corectley if it is under warranty it should be returned, if it is a 32/42 C3030 it is an old model in the UK other countries may use different model numbers

I HAVE A PROBLEM ON SHARP 21 INCHES THE PROBLEM IS NO VIDEO BUT THERE WAS A SOUND IF I PUSH THE CHANNEL UP AND DOWN WILL DISPLAY OR VOLUME OK BUT NO DISPLAY BLACK SREEN

Sony has a code for those blinks indicating the problem area. Count the blonks till the pause then google Sony blink codes for the area to fix.