- Check Power at node 20 should be Battery voltage
- Check 5V at pin 8 of SO-8 chip on the same side with MCU, node 20 is pin 1 of the same chip.
- Check 10V at pin 1 of SO4A (small 6pin IC)
- Check 10V at pin 1 of SO-8 FET drivers
- Check all diodes, 3 pin IC's
- Remove excessive heatsink compound from MCU pins
Let us know, results
And, yes I have spare MM-brains boards. They are very reliable and easy to fix. Although haven't drawn schematic yet.
See attached zipfile for FET's schematic...