I have a dolphin M5 that has an issue. One sides drive motor will not go backwards.
1) in one direction it travels straight and both tracks spin.
2) in the opposite direction only one track spins
3) the corresponding turn only works in one direction
4) this happens whether you are in auto mode or remote control mode
Obviously this makes the unit perform marginally at best. Does anyone have any ideas or thoughts on potential root cause and fixes?