I was about to test my 'optimized PSU' board (for a MB-SID) with the C64 adapter, but the C64 adapter was kind enough to fail on me. Therefore, I changed the DIN-connector with two connectors that will fit standard wallwarts. Schematics from my PSU-board are attached (Addition to the schematics: The capacitors right after the bridge rectifier are 2200uF/25V (electrolytic) and 330nF (ceramic). Also the capacitors between the 15V and 7812 / 7809 may not be essential, but that was something I reali