Voltage conversion of Accuphase E-650

If you can post a picture of the power selection board, maybe I can provide some help on the voltage conversion.

BTW, have you completed the A-48 conversion?

Thank you, imhififan. Here's a picture of E-650:

https://onedrive.live.com/?cid=6E164E2EDFDD40F6&id=6E164E2EDFDD40F6%2167223&parId=6E164E2EDFDD40F6%21120&o=OneUp

Yes, I have completed the A-48  conversion. You've been very helpful. Thank you very much again!

Desolder K3, K4 and solder it to K5, K6 position will convert input voltage from 100V to 120V.
Again, I recommend use a dim bulb tester for first time power up the amplifier after voltage conversion.
Hope this helps.