Voltage transformer. Japanese Boombox.

[neanderthal]

Hi all.

I have a Japanese Boombox that I would like to keep original. I have plugged it into our USA mains for short periods, and it plays fine, but now want to get the correct voltage transformer to power it, 120V- 100V.
Does anyone a brand recommendation in terms of transformers, or even a trusted source?

Thanks.

 

[hopey]

I have had success with using old Laptop power supplies you can connect to the battery terminals or sweat in a new low voltage plug to suit if it doesn't already have one. You can run a slightly higher voltage but not lower.

The internal transformers are bespoke and very hard to find a new one to match.

 

[Superduper]

Hammond, or Triad transformers. You can buy from Digikey or Mouser, or maybe Farnell.

 

[BoomboxLover48]

I have had success with using old Laptop power supplies you can connect to the battery terminals or sweat in a new low voltage plug to suit if it doesn't already have one. You can run a slightly higher voltage but not lower.

The internal transformers are bespoke and very hard to find a new one to match.

This is the last option. Be careful using the correct polarity. There is a good chance to reverse the polarity if one doesn't pay attention to the polarity marked on the boombox and the power supply plug.

 

[BoomboxLover48]

Amazon.com: PowerBright Japanese Voltage Transformer, 100 Watts Max Output Step Up Step Down Japan Converter for 120 Volt and 100V Countries, Convert from 120V to 100V and 100V to 120V, Universal Outlet Socket : Tools & Home Improvement

100W should be plenty. It gives steady 100V all the time.
Higher wattage of the same is also available.

 

[neanderthal]

Amazon.com: PowerBright Japanese Voltage Transformer, 100 Watts Max Output Step Up Step Down Japan Converter for 120 Volt and 100V Countries, Convert from 120V to 100V and 100V to 120V, Universal Outlet Socket : Tools & Home Improvement

100W should be plenty. It gives steady 100V all the time.
Higher wattage of the same is also available.

Literally the one I was looking at.