# Spindle start up and the cuts out

**URL:** <https://forum.pwncnc.com/t/spindle-start-up-and-the-cuts-out/3479>\
**Category:** General\
**Tags:** troubleshooting\
**Created:** [August 24, 2025, 3:38am UTC](https://forum.pwncnc.com/t/spindle-start-up-and-the-cuts-out/3479 "2025-08-24T03:38:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Cfidanzc3](https://avatars.discourse-cdn.com/v4/letter/c/7cd45c/32.png) [@Cfidanzc3](https://forum.pwncnc.com/u/Cfidanzc3)\
**Post date:** [August 24, 2025, 3:38am UTC](https://forum.pwncnc.com/t/spindle-start-up-and-the-cuts-out/3479/1 "2025-08-24T03:38:04Z")

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I have a 1.5 kw PWN water cooled spindle. My control board is a Sienci labs slbext. When I press start the machine goes in motion. The spindle starts and the seconds later shuts down. I am able to subsequently run the spindle manually. Hopefully you can give me some guidance. It doesn’t happen all the time but I’d love it if it doesn’t occurred

My email is [cfid5@aol.com](mailto:cfid5@aol.com). My cell # is 203-509-435

Thank you in advance