Camera/flashligt extremely hot and not working

Hi,

I have a problem with my iPhone 5s. I dropped my iPhone and the screen was cracked. After the drop, my rear camera and flashlight stopped working. I thought if I replace the screen, the camera might start working again but no luck. If I try to turn them on, the top right corner of the phone gets extremely hot and I need to turn my phone off to stop the heat.

Anyone know what might be the problem and how to resolve that?

Thank you.

K.V