Can my 2021 Amazon Fire tablet 11th generation black screen because by

CAN A 2021 11TH GENERATION FIRE TABLET BLACK SCREEN BE CAUSED ON PURPOSE? I sold one. The buyer mistakenly bought it instead of a 4G SIM card tablet. There was no money back guarantee. Although I honored this. So I think they may have purposely disconnected something to make it go black screen too make it look as if it was a faulty device. They were caught in lies by eBay and me.

I'm wondering if there is a possibility they could have done this on purpose by disconnecting something?

I looked extremely carefully and saw no evidence of scratches which there should have been if they dropped it hard enough to make it go black screen. And the box did not have any crinkles in it which should have been the case if the delivery person dropped it. If anyone can give me any info please email larryskithandkin@gmail.com. I would like to fix it cheaply myself or pay someone very cheaply and donate it to a family with kids without money. THANKS.