Pioneer VSX-D701S Broken voltage Selector

[VintageAudio]

I have a vintage Pioneer VSX-D701S receiver that was purchased overseas. It is voltage selectable (110-240 VAC). The rotary switch went missing during a recent move and the part is no longer available from Pioneer. I don't have schematics or a service manual for this model. I understand you can solder jumpers on the back of the switch to convert the unit to 120 VAC. I would appreciate any technical advice for converting this unit to 120 VAC.

 

[Jack]

Try AudioKarma.org, you should find a number of vintage equipment techs and DIY's there.

 

[jadedavid]

If you follow the colored wires back to the transformer, it may have a tag on it which identifies what wires are what.