Voltage conversion of Accuphase E-5000

@imhififan

@foolishman 

Sorry, I have no experience with voltage conversion with the Accuphase C-47 and PS-1250 either.

I'd love to know how to do that though! If you could provide some close-up pictures of both sides of the power supply board in your threads, maybe we can figure it out.

 

C-47 has been updated to C-57. I have got C-57. Here are pictures of the power supply board:

C-57_1 (1).jpg

C-57_1 (2).jpg

C-57_1 (3).jpg

C-57_1 (4).jpg

C-57_1 (5).jpg

I will appreciate very much if you would provide information on how to convert 100v to 120v.

@foolishman 

It looks like Accuphase's typical preamp dual transformer setup, with jumpers J1, J2, J3 and J4, J5, J6 for voltage selection. Moving the jumpers to J2 and J5 will convert to 120V.

Before converting the voltage to 120V, testing this board with 100V input. Measure the DC voltage across the 220uF capacitor and if the voltage is less than 20% of the rated voltage of the relay coil, you don't need to do anything with this board.

@imhififan

Thank you very much for providing information. I will let you know as soon as voltage conversion completes.