Hi Folks, I bought a Philips badged AKG C12a with AKG N6128/23 power supply from a japan store.
Because the unit was operated with a step up converter, I opted to open the supply first.
Inside looks clean with 2 newer 2200 uF caps for the heater.
Mains ground pin is open, and there's no fuse.
The bottom side of the PCB looks like someone did a modification once.
The front shows heater setting for either the C12a/C61 or C28/C12, which is puzzling me.
The C12 needs an extra bias voltage and the supply has only a 6pin connector.
Does anyone have a schematic of this AKG N6128/23 power supply?
Cheers, Erik
Because the unit was operated with a step up converter, I opted to open the supply first.
Inside looks clean with 2 newer 2200 uF caps for the heater.
Mains ground pin is open, and there's no fuse.
The bottom side of the PCB looks like someone did a modification once.
The front shows heater setting for either the C12a/C61 or C28/C12, which is puzzling me.
The C12 needs an extra bias voltage and the supply has only a 6pin connector.
Does anyone have a schematic of this AKG N6128/23 power supply?
Cheers, Erik