Accuphase A-48S


@imhififan 

Here are photos for rear of 3 boards you specified:

A-48S (7).JPG

A-48S (8).JPG

A-48S (9).JPG

I will appreciate very much if you would provide information on them.

Thank you in advance.

 

foolishman

there's another way to convert to 120V, which is to swap the positions of the orange and yellow wires and swap the positions of the brown and black wires. Do you think it is OK?

Yes, both the 100V and 120V setups have the two primary windings in parallel, swapping the position of the orange and yellow wires and swapping the position of the brown and black wires should also work.

@imhififan 

Thank you for your response. I will let him know about it. He will be glad to hear it.

Thank you again.

 

What can't I see the photo's. When I click on them it just takes me to Onedrive

@imhififan 

Would it be possible to convert the A-48S from 100V to 230V given that it has a soft start #716-0962-01 requiring a replacement transformer?

Could you advise what the wiring changes would be to the transformer to convert the primary winding to 230V

Thanks, Andy

@andyf

Convert 100V to 230/240V, in addition to replacing the standby circuit transformer on #716-0962-01,

1. You will also need to find out which wires belong to which set of primary windings using an ohmmeter.

2. Remove jumpers J1 and J3 and install jumper on J2, change fuse on board #716-1364-01 from 10Amp to 5Amp.