# 10” monitor is intermittent EMI (Solved, Ferrite Chokes stopped the flicker) **URL:** \ **Category:** Uncategorized\ **Created:** [September 2, 2021, 11:16pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537 "2021-09-02T23:16:59Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 2, 2021, 11:16pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/1 "2021-09-02T23:16:59Z")
My monitor is now intermittent. It is turning the screen on and off. It is not losing power or connection. I have checked connections but just cannot stop the problem. This is a new issue. Any ideas or suggestions ---
**Author:** ![CncDiver](https://avatars.discourse-cdn.com/v4/letter/c/977dab/32.png) [@CncDiver](https://forum.onefinitycnc.com/u/CncDiver)\ **Post date:** [September 3, 2021, 12:40am UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/2 "2021-09-03T00:40:17Z")
I’ve been having this issue lately as well. It happened today actually. ---
**Author:** ![STEVEAPSEY](https://avatars.discourse-cdn.com/v4/letter/s/3ec8ea/32.png) [@STEVEAPSEY](https://forum.onefinitycnc.com/u/STEVEAPSEY)\ **Post date:** [September 3, 2021, 12:48am UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/3 "2021-09-03T00:48:47Z")
I have the same issue. emailed tech support and they said to make sure you turn monitor on first and not have spindle or other things plugged in with controller and monitor. I had just changed my spindle cooler to the plug strip with controller and monitor and that may have caused it. It did not do it today to my knowledge. It seemed to do it with intense g-code activity. Another thread said it was overloading the PI cpu and that Onefinity is looking to fix if possible ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 3, 2021, 12:12pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/4 "2021-09-03T12:12:48Z")
I have my monitor on a separate power strip . Most every thing else is 220 volts. ---
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [September 3, 2021, 2:44pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/5 "2021-09-03T14:44:21Z")
Ensure you have it connected properly: > [@How to connect the Touch Display (7, 8, 10.8")](https://forum.onefinitycnc.com/t/10-8-monitor-how-to-connect-it-to-power-and-the-controller/5081): > > When connecting a touchscreen to the Onefinity controller there are a few key items to make it work correctly: Step 1: POWER: Every screen must be connected to external (wall) power to operate correctly. Skipping this step is the most common mistake users make. On the 7 and 8" screens, the 12v wall power adapter must be connected to the 12v in (red arrow) port. On the 10", there is no 12v power input, instead, a USB C port labeled with a lightning bolt is used (red arrow). This cable must be … ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 3, 2021, 10:18pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/6 "2021-09-03T22:18:15Z")
Thank you for the info. All connections are correct and in place. The power is separate. So I am trying the ferrite rings suggested If no luck I will consider a different monitor. ---
**Author:** ![byron361](https://avatars.discourse-cdn.com/v4/letter/b/ad7895/32.png) [@byron361](https://forum.onefinitycnc.com/u/byron361)\ **Post date:** [September 5, 2021, 3:34am UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/7 "2021-09-05T03:34:25Z")
I have the exact problem over the last month. I have email tech for onefinity changed cables etc. still happening. ---
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [September 5, 2021, 7:28pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/8 "2021-09-05T19:28:04Z")
Ferrite rings is the next step. It’s an emi issue in your home environment. ---
**Author:** ![byron361](https://avatars.discourse-cdn.com/v4/letter/b/ad7895/32.png) [@byron361](https://forum.onefinitycnc.com/u/byron361)\ **Post date:** [September 6, 2021, 3:43am UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/9 "2021-09-06T03:43:54Z")
Thanks we will give that a try just weird that everything was fine for 2 months. ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 6, 2021, 11:56am UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/10 "2021-09-06T11:56:03Z")
Byron mine was fine for about 7 weeks I agree wierd ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 7, 2021, 1:40pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/11 "2021-09-07T13:40:27Z")
![image](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/2X/5/59554adc40ff691f635613cffab14a9fbeab6e89.jpeg) I added the ferrite rings to the monitor. Still need to test . Are there other places to put some of the 57 extra ferrite rings ---
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [September 7, 2021, 3:14pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/12 "2021-09-07T15:14:00Z")
What is this thick cord that the monitor mount is right next to? Router cable? The router sends the dirtiest signal. Being far away from the cable would be ideal ![59554adc40ff691f635613cffab14a9fbeab6e89](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/2X/d/d3638f6702666705eebee5531b01fed01e4093e2.jpeg) ---
**Author:** ![CncDiver](https://avatars.discourse-cdn.com/v4/letter/c/977dab/32.png) [@CncDiver](https://forum.onefinitycnc.com/u/CncDiver)\ **Post date:** [September 7, 2021, 3:26pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/13 "2021-09-07T15:26:24Z")
Can you post a link to the ferrite rings that you bought? ---
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [September 7, 2021, 4:58pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/14 "2021-09-07T16:58:41Z")
Here’s the ferrite rings we recommend: > **[Amazon.com: Ceedmon 20 Pieces Clip-on Ferrite Ring Core RFI EMI Noise Suppressor...](https://www.amazon.com/Cedmon-Pieces-Ferrite-Suppressor-Diameter/dp/B07CWCSNW9?tag=benmyers-20)** > > Application Occasions of This Great Noise Attenuator 1.Great for blocking RF-interfere 2.If you have computer interference around your computer, get a set and use them,they work. 3.If you are a ham radio operator and the antenna is in your attic.Put... ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 7, 2021, 5:01pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/15 "2021-09-07T17:01:09Z")
Yes those are the ones I purchased. Are there other places I should put these or do I have 57 extra? ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 7, 2021, 5:02pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/16 "2021-09-07T17:02:45Z")
I have been running for 4 hours today and the issue appears to have disappeared ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 7, 2021, 5:09pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/17 "2021-09-07T17:09:08Z")
It is my 220 volt line that supplies my system. Thank you so much for helping. I love this forum ![image](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/2X/5/5e937dcd78b4f2ec06cefa52c0bb6e8a3fdec208.jpeg) ---
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [September 7, 2021, 6:50pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/18 "2021-09-07T18:50:07Z")
oh momma, 220v right next to the screen, that will surly introduce interference! ---
**Author:** ![Dustydave](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/dustydave/32/1776_2.png) [@Dustydave](https://forum.onefinitycnc.com/u/Dustydave)\ **Post date:** [September 7, 2021, 7:45pm UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/19 "2021-09-07T19:45:40Z")
Oh papa. It has worked flawlessly for 7 hrs now. Five different runs The ferrite must have done it. Or the moon is in the seventh house dating myself ---
**Author:** ![Pony](https://avatars.discourse-cdn.com/v4/letter/p/4da419/32.png) [@Pony](https://forum.onefinitycnc.com/u/Pony)\ **Post date:** [October 13, 2023, 1:33am UTC](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537/20 "2023-10-13T01:33:45Z")
Thank you for all the EMI talk. The ferrite rings fixed my small monitor problem of blinking off and on during a run that I’ve had for the last several months. BTW, the moon **is** in the seventh house (or at least it use to be!) Pony [Next page](https://forum.onefinitycnc.com/t/10-monitor-is-intermittent-emi-solved-ferrite-chokes-stopped-the-flicker/7537.md?page=2)