# Dead motor controller? **URL:** \ **Category:** General Chat\ **Created:** [September 27, 2026, 10:42pm UTC](https://forum.avidcnc.com/t/dead-motor-controller/6617 "2026-09-27T22:42:38Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![MarcusinCO](https://avatars.discourse-cdn.com/v4/letter/m/3ec8ea/32.png) [@MarcusinCO](https://forum.avidcnc.com/u/MarcusinCO)\ **Post date:** [September 27, 2026, 10:42pm UTC](https://forum.avidcnc.com/t/dead-motor-controller/6617/1 "2026-09-27T22:42:38Z")
Hey all, I have about a 9 year old CNC RP pro machine, has been a rock star. Didnt use it for about 3 months, turned it on today and the slave Y was not working. Took a peek, fault light was on the motor driver. power cycled, stayed on. Swapped motor out at the connection on the controller to a new/backup motor, fault stayed on. Swapped connectors w/ the driver above it, fault light stays on. Starting to think I have a dead motor driver, open to any other troubleshooting steps though. Thanks! ---
**Author:** ![DavidL](https://avatars.discourse-cdn.com/v4/letter/d/ecc23a/32.png) [@DavidL](https://forum.avidcnc.com/u/DavidL)\ **Post date:** [September 28, 2026, 7:32pm UTC](https://forum.avidcnc.com/t/dead-motor-controller/6617/2 "2026-09-28T19:32:56Z")
Sounds like you’ve done some solid troubleshooting at both the input and output of the driver. Only other thing I can think of is to check the DIP switches - maybe take note of their position (I think all drivers use the same set), then cycle them all a few times, and back to original position. I had a sticky DIP switch on a N23 driver once, it was setting the wrong current levels or something. Failing that, reach out to Avid for a replacement and get that thing running again. ---
**Author:** ![Eric](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/eric/32/3220_2.png) [@Eric](https://forum.avidcnc.com/u/Eric)\ **Post date:** [September 28, 2026, 7:56pm UTC](https://forum.avidcnc.com/t/dead-motor-controller/6617/3 "2026-09-28T19:56:48Z")
If you do have a blown driver we have those in stock ---
**Author:** ![MarcusinCO](https://avatars.discourse-cdn.com/v4/letter/m/3ec8ea/32.png) [@MarcusinCO](https://forum.avidcnc.com/u/MarcusinCO)\ **Post date:** [September 28, 2026, 8:24pm UTC](https://forum.avidcnc.com/t/dead-motor-controller/6617/5 "2026-09-28T20:24:23Z")
Good idea to double check thanks!