# CNC-12 Spindle wont start (intermitent)

**URL:** <https://forum.avidcnc.com/t/cnc-12-spindle-wont-start-intermitent/6635>\
**Category:** General Chat\
**Tags:** spindle, ex-controller\
**Created:** [October 2, 2026, 1:20am UTC](https://forum.avidcnc.com/t/cnc-12-spindle-wont-start-intermitent/6635 "2026-10-02T01:20:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![SunCItyJim](https://avatars.discourse-cdn.com/v4/letter/s/59ef9b/32.png) [@SunCItyJim](https://forum.avidcnc.com/u/SunCItyJim)\
**Post date:** [October 2, 2026, 1:20am UTC](https://forum.avidcnc.com/t/cnc-12-spindle-wont-start-intermitent/6635/1 "2026-10-02T01:20:02Z")

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We have a Pro 2448 that periodically refuses to start the spindle. Generally a power cycle of the EX and the VFD along with a restart will remedy it … until it doesn’t. It has become more frequent …Any advice?

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**Author:** ![jjneeb](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/jjneeb/32/244_2.png) [@jjneeb](https://forum.avidcnc.com/u/jjneeb)\
**Post date:** [October 2, 2026, 3:52am UTC](https://forum.avidcnc.com/t/cnc-12-spindle-wont-start-intermitent/6635/2 "2026-10-02T03:52:11Z")

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Most likely the spindle contactor relay. Put a call into support and they’ll get you going.

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**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:** [October 2, 2026, 9:05pm UTC](https://forum.avidcnc.com/t/cnc-12-spindle-wont-start-intermitent/6635/3 "2026-10-02T21:05:23Z")

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Same thing Jim said. I’m only saying it too because I work here and I’m supposed to 🙂