Hello, another MB33 mk1 owner here!
Ive read the whole discussion and can't find the answer to my problem:
Evertything works great except the auto tune button. When i press it the midi LED lights up and it stops reacting to incoming midi, nothing happens. Strangely enough the auto tune seems to work when i power up the unit: the Midi LED lights up for some time then its goes dark and the unit is running properly.
Any help?
Also it might be worth mentioning that i opened it up and changed one resistor to get some more resonance,
this one. I changed from the original 2,2k to a 3,9k. Sounds great. But this shouldn't affect auto tune should it?