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[hank]

The ‘next mode memory’ problem I have is probably a bad capacitor or two, as people described here:

Help! - MTN-20DD driver with guppydrv always starting in next mode

I can't help too much - don't have that particular one and there's no pics here or on the MtnE site. It should have a cap on the board for OFF time memory, and seems like that functionality is not working. If the firmware thinks the cap is always almost fully charged, it will always do the next mode. So, this is a possible cause of this behavior (cap is not functioning correctly due to possible bad solder joint or bad cap). The OTC (OFF time cap) should be the smaller of the 2 caps - one end of…

and here:

Help! - MTN-20DD driver with guppydrv always starting in next mode

I had this problem once. One of my capacitors (unsure which one) was not charging and discharging properly. I bought replacements for both C1 and the offtime capacitor, installed them, and my problem was solved. Try re-flowing the capacitors, and if that doesn’t work, try replacing them.

Time for me to learn how to solder itty bitty things.