When I release deadman switch the arm of the robot starts to sag, seemingly its only J2 that doesn't lock up right away. Looking into the manual the solutions are either to replace the motor or the relay.
Now I am pretty sure its the motor because if it were the relay it would affect more joints I would think.
Is that accurate? I don't want to go through changing the motor to find out it was the relay in the end, how do I know for sure which one is the problem?