I started to disassemble a bread bin C64 for diagnosis. It was sold as "Used to go about 12 months ago, now doesn't" and the PSU was pictured in the auction but "sold separately". The case looked to be in reasonable condition in the picture so I thought it worth the risk at $15NZD (about $10 USD). Upon receiving the unit I noticed the power LED negative wire was obscuring the power socket. The seller must have had a fiddle after finding out it didn't go. Chances are the PSU will now blow up someone else's C64.
This unit gives no sign of life when power is applied, and the power LED does not light. Upon removing the top cover and cardboard shield I found signs that repair has been attempted at some point - possibly successfully. A capacitor and VR1 - a 7812 12V regulator - have been replaced, and the solder job doesn't look too professional. The power socket feels very loose to next steps will be testing that power is making its way to the board, and testing the VRs. That's as far as I got this evening.
UPDATE: Looking at the schematics, the LED connector (the sixth photo below) is cunningly designed to work either way 'round! Very nice touch.
