By mj2772
Mon Oct 15, 2018 12:27 pm
Currently have an MPC3000 and the 0/./Enter/Tempo Sync/Transpose/Simul Seq row of buttons are non operational.
I opened it up and there's continuity on all 6 buttons when pressed, so it's not the contacts (would be pretty unusual for all 6 to go like that anyway)
I checked the service manual and traced all 6 buttons to a diode d615. I tested the diode with my multimeter (with help from google) but its fine too.
any ideas would be really appreciated! everything else works flawlessly on it, it would be amazing to get it up and running as it's been in someones loft for 10 years!
I opened it up and there's continuity on all 6 buttons when pressed, so it's not the contacts (would be pretty unusual for all 6 to go like that anyway)
I checked the service manual and traced all 6 buttons to a diode d615. I tested the diode with my multimeter (with help from google) but its fine too.
any ideas would be really appreciated! everything else works flawlessly on it, it would be amazing to get it up and running as it's been in someones loft for 10 years!