My Raspberry Pi was working great but after a couple of hours I found it not booted. then I found out it's CPU and F1 fuse are extremely hot. I unplugged it and let it to rest for half an hour, then I tried to turn it on. the red led (pwr) is on (but not really bright and turns off after about ten seconds) and F1 and IC2 become extremely hot immediately and nothing happens. I've checked with different power supplies, have everything unplugged except power and also I tried removing SD card as well but no luck :(
what's wrong with my Raspberry Pi 1?