The TV screen is going black every few seconds

Lailuma Raufi I would suggest that you try to reset it first. disconnect all video inputs from your TV. The disconnect the TV from the power outlet. Hold the Power button depressed for about a minute. The connect one video input sources, preferably a local one. Something like a game console or DVD/BR player and reconnect your TV. Let us know if anything has changed.

If it has not, then it is time to remove the back cover from your TV. Take a look at all the board. Check for any obvious damaged like burned,. charred or otherwise damaged components. Post some pictures of those boards with your QUESTION. That way we can see what you see. Next test is to disconnect the cable coming from the main board to the power board. Plug your AC cord into the power board and your back lights should come on. You can see those through the multiple holes in the sheet metal on the bc of your panel. Do those lights stay on solid or do they turn off and on? If they turn off and on it is your backlight that has failed. You will have to replace those strips that are "inside" the panel. Let us know what you find out and let us know if you are okay with these instructions. Let us know If we need to clear anything up.

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