My CSPPC had the same problem, it was caused by the 060 socket. As it is surface mountered you won't see the head of the pins on the other side so you'd better leave finding cold solder points to an experienced technician.
The technician removed my socket completely, cleaned it from stanium, cleaned the board from stanium and later resoldered it with high quality stanium and a soldering station.
You could also try to clean the contacts of the 060 and the socket, insert it again in the socket and press it into the socket. Remember to also press in the other side of the socket to avoid damaging the traces of the board.
As you have already been advised to... it may be a good idea to also check out your power supply.
