Battery overheating and camera problem

hello to all
i actually have overheating problems with my mx5 chinese version
Ok after I change my rear camera my battery drain to fast and motherboard gets too hot and battery drop from 62% - 0 % in a minute and my rear camera never working and my front camera look like upside down.
New camera removed again and I put old one but now all my cameras doesn’t work.

please can someone help me with this?
thank you to all.

@charis-charalampous Are you sure you put the right one in the right place ? If yes just keep the old camera and install the rom once again with wipe data.

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