I bought a new c-64 PSU - one of the nicer ones that are repairable. now the 5vdc is working and the sid is getting the 12v it needs. And you're right, it's not fried. It does however have an issue with voice 1 - it doesn't track the keyboard correctly, osc2 and 3 do - I assume it's the SID, I understand they can have bad voices though. Otherwise, it's working great! I'm gonna order a NOS SID chip now and then start on Step A, the minimal CS.