HI friend.I know very little about this brand
In my limited experience though, If the machine doesn't work anymore. It is recommended to first rule out whether there is a fault with the cable, such as disconnection, loose thread, etc.
Then analyze it against the manual and fault codes.
Encoder failure is relatively common
Driver failures are more concentrated on the PCB circuit board. If there is a problem with the circuit board, it may be more difficult to repair. Usually this requires specialized technical