Accuphase E-260 Voltage Conversion (100V to 230V)

@imhififan 

@frankhhh 

i sent you a direct message. Thanks

Hi @imhififan 

i just have a question regarding the conversion on the e-270. 
If following the voltage conversion table to 120v from the e-260 service manual, and apply the rewiring on the e-270, it turns out that pin 2 should be black and pin 4 should be orange. 
as both cables are 100v, I’m wondering if there would be any difference from your proposed cabling scheme above?

Thanks so much. 

Thanks so much @imhififan 

does it matter which wires go on top and on the bottom of pin 3 ? 
also, is it possible to use my synergistic research purple fuse on the e-270 ? 
the fuse is currently used on a 120b Hegel H190 and it’s rated at 10AT ( slow blow)

Thanks again for your support  

Thank you @imhififan , appreciate it.

Hi @imhififan 

I have successfully converted my E-270 from 100v to 120v thanks to your help. However, I keep wondering how come the conversion doesn’t affect the voltage output that goes into the internal components?  Is the internal power transformer designed to provide the same voltage output to the components regardless of the input, whether it’s 100v or 240v ? Thanks again for your help. 

Thanks so much @imhififan 

Hi @imhififan

Sorry for bugging you again.

Since my E-270, which I converted to run on 120v, won’t receive any service support in the US, I’ve been careful to ensure it lasts as long as possible. To achieve this, I always unplug the power cord when it’s not in use. My reasoning is to prevent the primary windings of the internal power supply from being constantly energized with 120v, which could potentially shorten its lifespan by continually converting it to 50v.

Am I correct in thinking this way? If the power switch is responsible for supplying 50v to the internal components, then unplugging the power cord would indeed help preserve the transformer’s lifespan.

On the other hand, if the power switch is responsible for passing 120v directly to the primary windings, and considering there’s a fuse next to the power switch, logic suggests that leaving the power cord unplugged in when not in use might not be necessary.

Thank you

Hi @imhififan 

Thank you again for your knowledge.

That soft-start thing seems too involved and I'm afraid to venture into it. Is it a DIY or a pre-made kit?

Thank you.