Voltage conversion of Accuphase E-5000

@imhififan

Thank you very much for your response.

I will try to take some pictures for the power supply board of those items and post them.

Thank you again.

@imhififan

Again, meanwhile, do you know how to convert voltage of the Accuphase C-3900 Pre-Amplifier from 100V to 230V?

Also, do you know how to convert voltage of the Accuphase A-300 Power Amplifier from 100V to 230V?

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

@imhififan

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.

Regarding PS-1250, do you think it is possible to convert voltage to 120V without replacing the main transformer?

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.

Given the range of units that have been mentioned above for conversion (E-5000, E-700, E-4000, DP-450, C-47, PS-1250, C-3900, A-300 - and C-2300 in a previous thread) this sounds more like a business venture as opposed to someone putting together a personal system. These units could appear on the secondary market. There may be some attempts at stencilling on the rear panel to hide the conversion and make them look like authentic 120v units.

I would urge all Audiogon members to be very wary of buying units that have been converted and relabeled and to carefully investigate the provenance of used units.

Caveat emptor!

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.