JVC Tv Power problems

The Tv when it’s off it’s off it will switch on again after a long time while it’s off their is No standby light but when I plug my phone on the USB port on the back of the tv it charges the phone

How do you solve this kinda problem?

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Can you take the back off the TV and upload pictures of the circuit boards inside the TV? Adding images to an existing question

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Is there any pattern to when the device powers on? Is it after the same amount of time, or is it just random?

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Thato AMOGELANG what exact model is your TV? The only reason that it charges your phone is that your USB port is still receiving power this doesn't mean your power board has not failed but you will have to take some measurements on the output to the main board.

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