Repair Log: MNT Reform Beta (D-3)
Date: 2021-06-30
Cleaned keyboard and exchanged keycaps to MBK model (QWERTY).
Cleaned unit with compressed air.
Replaced missing screws.
Replaced all 8 battery cells (7/8 were dead).
Replaced discharge resistor R29 (it was exploded). 10 Ohms.
Performed charge control modification with a bodge wire (see MNT Reform R-2 Motherboard Update 2021-04-19).
Performed safety modification on power jack (see MNT Reform: First EU Batch? Do this safety modification).
Upgraded motherboard firmware to R2/20210419
Upgraded keyboard firmware to R1/20210419
Had 2 bad measurements on LTC sense resistors:
Decided to desolder and exchange LTC6803-4 chip. This fixed the problem. The chip was faulty.
Performed charging test. Cell voltages nominal, charger correctly finished at top end.