My Camera power on and off erratically

I bought a camera that doesn't turn on in Japan at a very low price and was thinking of repairing it.There was no response when I received the camera and replaced it with a new battery.And when I put in a new sd card (Sandisk Extreme sd card 64gb), it started working.I used it well after that, but it suddenly stopped working again.Remove the battery and sd card, wait for about a day, and then operate it again.But this doesn't last long either.It's almost a new camera with fewer than 10,000 shutters.What is the problem?

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