Voltage conversion of Accuphase C-2300 to from 100V to 120V

To measure the DC resistance of the transformer primary winding, plug the transformer wires into sockets K1 and K2 and remove the jumpers (J2, J5) before measuring.

@imhififan

Thank you very much for your providing information in details. I will try to do accordingly and let you know.

Thank you very much again.

@imhififan

Meanwhile, I want to do conversion of the Accuphase A-48S also at this opportunity.

Here are pictures of the power board of A-48S:

A-48S (1).JPG

A-48S (2).JPG

A-48S (3).JPG

A-48S (4).JPG

A-48S (5).JPG

A-48S (6).JPG

I will appreciate very much if you would provide information on how to convert voltage to 120V.

Thank you in advance.

@imhififan

Your assumption of information on C-2300 is correct. I have successfully converted to 120V. Thank you very much.

Meanwhile, I am looking forward to receiving information on A-48S, also.

@foolishman 

Good to know that the C2300 voltage conversion was completed successfully.

Regarding the A-48S, it appears that 716-1374-00 is the voltage selection board, 716-1304-01 is the soft start resistor selection board, and 716-0962-01 is the standby power supply board. I have no idea what the function of the 716-1362-00 board is, if you could remove all of these boards from the case and post photo of the reverse side, maybe I can figure out how to do the voltage conversion.