Accuphase E-280 Voltage Conversion (100V to 120V)

it seems accuphase didn’t change power supply design for e2xx series for years! need to be careful if there is no standby small power transformer etc. ideally need to disconnect all transformer tabs, and properly identify all primary coil connections (resistance measurement will do), then reconnect accordingly to AC power needs, here is accuphase relevant schematics: 

https://elektrotanya.com/PREVIEWS/63463243/23432455/accuphase/accuphase_e-202_amplifier_schematic.pdf_1.png

I wish the newer Accuphase integrateds were this easy to convert.

It sounds like they may have made it a more complex operation with non-convertible transformers and/or soldered connections. From Axiss:

"Accuphase builds different power supplies for Japan (100V), the U.S. (120V), and Europe (230V), each with custom transformers optimized for the respective voltage."

Well I had a long list of possible candidates for a do it yourself power conversion due to the fact that you can get schematics with colors:

E-308, E-307, E-305, E212, E-213, E450, 

for E-370 there is a post showing how to move jumpers.

Older equipment will need some capacitors replaced at some stage, so I started looking for something newer and found the E-280

for the E-280 I relied on the Japanese seller on doing the conversion ( no schematics available at the moment ) and the other photos on this post to confirm that in fact it was converted.

It worked as intended and yes some models have a smaller stand by transformer that need to be addressed too . That is why I gave models with schematics a lot of priority. The E-280 being the entry model is small and simple enough not o have the extra transformer.

MacIntosh does something similar too, but some models come with a voltage specific transformer, with no option to rewire the taps.

I hope this info helps Accuphase enthusiasts that are looking for a second hand unit to be adapted to a different area.

Did anyone already attempt an E-3000? I’m wondering if the voltage selection still looks similar as on the other 2xx models. Anyone got a photo of the interior? Can’t seem to find anything online. Thank you in advance guys