Nintendo Switch fan not working

Hello,

Hope everyone is doing well.

My niece Nintendo Switch fan is not working and is causing the device to overheat. Purchased a replacement fan and still does not function, so I tested both original and replacement fan on my own switch and both worked perfect.

She apparently dropped the switch while it was docked and since then it started overheating and her joycon will not charge when attached to the switch.

Anything else besides the fan I can check to get this working?