TK1 Won't Power On

My TK1 won’t power on. I accidentally let a ground wire from a 12V power source touch the top of the board near the power, reset, force-recovery buttons. The fan won’t spin. The LED won’t come on. No USB power. I assume I blew a capacitor somewhere. Any way I can verify this? Any other suggestions? I did the RMA thing, but I would prefer to not wait the month it takes to fix.

You can use a multimeter to probe which rail is shorted to ground and then to locate the broken component on rail by isolating one by one.