During the installation process, it was found that one of the solder pins of the IC was missing, and I didn’t care. When connecting the JUNO60 to the computer, I sent a MIDI signal and recorded it, and I got the wrong signal. It seems that the wrong MIDI information was received. Falling solder feet. I've sent it to a pro who knows circuits to have it re-soldered, not sure if that fixes the problem.
The version I received is V3, the photos are all V2, I don't know if valpower has improved the circuit. Everything has to wait until the re-soldering is completed to judge

Response from Valpower | April 3, 2022

HI yannick:

if having any issues with the device , please contact the support directly.
Also , please take a look at the manual: http://valpower.cc/manuals/dcb_oldschool_manual.pdf
i will have no problem solving your issue.

best regards
chriss from valpower

Craig | Dec. 6, 2020

Does what it should

For Midi CV/Gate

I needed this to get my Werkstatt connected to midi. It works well, no real documentation, but I think there’s only so much it needs to do. If I had my wishes, the power would use a standard negative shield pin so all my transformers would work without needing to switch the post it I’ve to negative.

Luis | July 13, 2018

Great product made in France

For USB MIDI DCB adaptor for Roland Juno 60

This product works great with my Juno. I've been looking for a non-invasive midi DCB interfaces, but they were expensive for simple "note on, note off" functionality. I'm glad I've waited, this solved my Juno-60 situation! Merci et à bientôt!

Tindie

Valpower

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IC broke a solder leg

Response from Valpower | April 3, 2022

Does what it should

Great product made in France