Hi, I have the same proble and I need to do replacement as well, can you please give more info?
which diode you used, any photos of the location on board? Did you take it out, or did it while being inside cabinet? any details much appreciated
The diode is located next to the crma connector on the board. To replace the diode, I removed the circuit board from the cabinet. I used smaj24a diode. As of today, everything is working fine. I used to have a solenoid valve directly connected to my robot. After the accident I connected it via a relay.