Accuphase A-48S

@imhififan 

I think you also need to following photos to figure out.

A-48S (1).JPG

A-48S (2).JPG

A-48S (3).JPG

A-48S (4).JPG

A-48S (5).JPG

A-48S (6).JPG

A-48S (10).JPG

A-48S (11).JPG

A-48S (12).JPG

Thank you in advance.

Thank you for your valuable opinion. I have no intention of opposing it or arguing with it. Let's get along, anyway. What I am interested in is only quality of sound.

@imhififan 

Since it's not easy to pull out the transformer wires (although I know I must pull out the transformer wires when I actually do conversion), a friend of mine who is familiar with PCB of electronics arranged an image which explains the connector layout for me.

Here's a link of the image:

A-48S_wires (003).jpg

Also, here are links for markings/part number of the component on the 716-1362-00:

716-1362-00 (1).JPG

716-1362-00 (2).JPG

According to him, the component on the 716-1362-00 is perhaps the bridge diode for rectification.

Hopefully, these photos will help you figure out.

Thank you.

@imhififan 

Thank you very much for providing information on how to convert 100V to 120V. I have done accordingly, and I confirm I have successfully converted voltage to 120V. According to my friend, 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?

Accuphase products are certainly state of the art in terms of build and design, and if pricing was more affordable outside of Japan, I think more Accuphase enthusiasts would be able to enjoy it.

I agree.

Information you provide always helps me. 

Thank you very much again.

@imhififan 

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

Thank you again.

@imhififan 

Regarding converting 100V to 230V, I also would like to know how to convert voltage of C-2300.

Here are links of images:

C-2300_1 (1).JPG

C-2300_1 (2).JPG

C-2300_1 (14).JPG

C-2300_1 (15).JPG

I will appreciate very much if you would provide information.

Thank you in advance.

@imhififan 

Thank you very much for the information you provided. Regarding voltage on the rear panel, I will check and let you know.

Meanwhile, do you think it is OK to change only connecting J3, J6? Or do I need to change other boards like the sub-transformer board?

Thank you in advance.

@imhififan 

However, according to the brochure of C-2300, it is marked as 120V, 220V, 230V AC (voltage is shown on the rear panel).

I have checked the rear panel, but there's no such marking.

Would you please take a look at the following photos? I have marked one board. I was wondering if it is a board for standby/power-on function.

C-2300_1 (18) 1.JPG

C-2300_1 (19) 1.JPG

C-2300_1 (20) 1.JPG

Thank you in advance.

@imhififan 

Here are images for those boards:

IMG_1290 1.jpg

IMG_1291.jpg

Hopefully, you will be able to identify some components from above images.

Thank in advance.

@imhififan 

Thank you very much for your providing information on the transformer to be replaced. I will try to get it and replace.

I will let you know as soon as I complete to replace the transformer.

Thank you again.