# EMI

**URL:** https://forum.onefinitycnc.com/c/faq/emi/152.md

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## [About the EMI category](https://forum.onefinitycnc.com/t/about-the-emi-category/20538)

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**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\
**Replies:** 0

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What is an electromagnetic interference? Electromagnetic interference (EMI) is unwanted noise or interference in an electrical path or circuit caused by an outside source. It is also known as radio frequency interference…

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## [EMI | Screen Flickering, Blank, or Black Screen, Randomly Loosing Zeros, Freezing, Disconnecting or Random Happenings](https://forum.onefinitycnc.com/t/emi-screen-flickering-blank-or-black-screen-randomly-loosing-zeros-freezing-disconnecting-or-random-happenings/14116)

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**Author:** [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\
**Replies:** 0\
**Last updated:** [July 13, 2022, 3:27pm UTC](https://forum.onefinitycnc.com/t/emi-screen-flickering-blank-or-black-screen-randomly-loosing-zeros-freezing-disconnecting-or-random-happenings/14116 "2022-07-13T15:27:05Z")

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EMI, Flickering, Black or Blank screen, Random Axis motor alarms and axis movements: If you have verified you have the cables connected correctly (screen MUST be connected to wall power) and the screen is blinking on an…