When mine didn’t boot I tried everytrhing and nothing fixed it.
I ended up selling it for 400 euro as parts and that was the end of my Elektron journey that included all their machines up to RYTM mk1. I didn’t buy anything Elektron since then. I just have my OT-1.
I loved the old stuff my MnM MKII and the MDUW along with the 3 black OT-1, A4, and RYTM, but when the ring broke I sold them all.
I looked many times to get an MnM but prices are a joke now. Looking at what the MnM board was I definitely won’t be paying today’s prices. Especially when looking inside my Juno60. 