I thought I knew the problem (dead battery, stupid camera firmware that prevents it from charging via usb if the battery is fully dead, seller didn't have external charger to actually test it) from the description & I was right nyeheheh
ah, reminds me of how i got a gaming computer a while ago sold for parts or repair.
...the computer worked perfectly - the issue with it was that the physical power button on the case broke. my repair was just using the reset button instead. a professional shop apparently couldn't figure that out and told them the motherboard was fried.