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Roland JX3P - Transformer Replacement

I got the request for a transformer replacement, to convert the JX-3P from a 117V version to a 230V version. So I ordered suitable torroid transformers at www.multi-circuit-boards.eu.

This is the transformer with the included mounting material:

The transformer has an input for 2 x 115V AC primary; the secondary side provides 2 x 16V, 0.4A each and 1 x 9V, 0.8A. The transformer may be used for other roland synths like the Juno-series too (not tested). And also it is well suitable for eurorack power supplies.

I am selling these as spare part. The corresponding modifications must be undertaken by qualified persons. I REJECT ALL LIABILITY FOR ALL CONSEQUENCES OF USING THIS DEVICE. I will send an instructional graphic how to wire the the transformer. I WILL NOT ANSWER ANY QUESTIONS ON HOW TO DO THIS. PERSONS WHO HAVE TO ASK QUESTIONS ABOUT THAT ARE APPEARENTLY NOT QUALIFIED TO UNDERTAKE THE MODIFICATION!

By sending an order for this transformer you agree with these conditions.


GermanyEuropean Union
(no VAT-ID)
European Union with VAT-ID or
outside the European Union
30,-€24,30€ plus your local VAT24,30€
Shipping in Germany is 4,99 Euro.
Shipping within the EU is 8.99 Euro plus 2.99 Euro tracking and insurance.
Shipping outside the EU is at the moment 15.89 Euro plus 4.- Euro tracking and insurance.
These shipping costs may change, so please check the website of Deutsche Post).

Unfortunately the order-page is not functional at the moment. For inquiries please send a mail

© florian anwander May 2021-Jan 2022