Voltage conversion of Accuphase E-5000


Does anyone know how to convert voltage of Accuphase E-5000 100v to 110/120v? Or does anyone provide information on voltage conversion table of Accuphase E-5000?

foolishman

Converting Accuphase amps from 100v to 120v is not straightforward as the above discussion illustrates. You can never be sure that it was done correctly or to Accuphase standards ("you can use a 680Ω 3W resistor to replace fuse F1"). The above discussion does not inspire confidence, and these units could be a fire hazard.

Thanks for pointing it out! I should have been more specific.

You can use a 680Ω 3W resistor to replace fuse F1.

https://www.vishay.com/docs/28729/pr010203.pdf

The vishay resistor that I recommended is a fusible resistor, it will blow out like a fuse in the event of a short circuit, protecting the circuit from damage and fire.

Fusible resistors are used as safety devices to prevent electrical fires and other damage caused by excessive current being applied at once. They can be found in household appliances like washing machines and microwaves, as well as electronic devices like stereos.

A fusible resistor performs dual functions. Once the power supply is exceeded, then it works like a resistor limiting current. Similarly, once the rating of power is exceeded, then it works as a fuse in the circuit to defend different components within the circuit from the surplus current.

Anyway, my intention is just to help those who have an Accuphase with Japan voltage and want to convert it to 120V or 220/240V, I don’t gain any financial interest from anyone.

 

 

 

@imhififan
 

Anyway, my intention is just to help those who have an Accuphase with Japan voltage and want to convert it to 120V or 220/240V, I don’t gain any financial interest from anyone

Your comments are correct and very persuasive. I am not interested in running business about any audio gears, but I am very interested in quality of sound.

I look forward to your posting comments in the future.

Thank you.

 

@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.