Can Electrical Currents Affect My CRT Monitor?

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Discussion Overview

The discussion revolves around the effects of electrical currents and electromagnetic interference on a CRT monitor, specifically addressing the issue of screen shaking. Participants explore potential causes and solutions, including environmental factors and shielding methods.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant notes that their CRT monitor shakes, possibly due to nearby thick wires, and seeks advice on mitigating the issue.
  • Another suggests using cooking foil as a potential solution and raises the possibility of reception problems related to cable or antenna interference.
  • A third participant inquires if a cell phone is placed near the monitor during the shaking, implying it could be a source of interference.
  • One participant explains that while CRT monitors are generally well-shielded, a strong electromagnetic field could still cause issues, recommending aluminum foil or Mu metal for shielding depending on the type of interference.
  • A later reply questions the presence of other electronic devices, noting that even a webcam could potentially contribute to the problem.

Areas of Agreement / Disagreement

Participants express various hypotheses regarding the cause of the monitor's shaking, with no consensus on the definitive source or solution. Multiple competing views on potential interference and shielding methods remain unresolved.

Contextual Notes

Participants mention various factors that could influence the monitor's performance, including the proximity of other devices and the type of electromagnetic interference, but do not reach a conclusion on the specific cause.

Who May Find This Useful

This discussion may be useful for individuals experiencing similar issues with CRT monitors or those interested in understanding the effects of electromagnetic interference on electronic devices.

kablo0ey
I have a CRT monitor aligned against the wall of my apartment. At times the screen begins to shake as though a current was running near it. I looked outside and there are 3 big 1-1.5 inch thick wires going up the wall near where my CRT monitor is. I assume this is the problem. Because of my room set up, I can not move my moitor. Is there anything I can do to fix this problem? I remember hearing that a gauze or sqaure wired sheet of metal blocks current from entering an area but I'm not sure if that info is corrent or if it was for magnetic flow. Any help with this would greatly be appreciated. Thank you
 
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Greetings !

Perhaps cooking foil could solve the problem.
(Do you have cable/settelite T.V. or a simple antenna ?
It could be reception problems if it's an antenna or
interference of settelite reception during bad weather.)

Live long and prosper.
 
You wouldn't happen to have your cell phone sitting next to the monitor when this happens, would you?
 
PC monitors are actually shielded internally pretty well, but nevertheless a sufficiently strong EM field could cause your problem. There’re two types of shielding. The aluminum foil, if grounded could solve your problem, but if it’s a magnetic field causing your grief you’ll have to use something called Mu (Greek letter) metal.

I think your problem is more likely to be internal to the monitor, perhaps a loose or resistive connector or as Russ stated the problem could well be another electronic device. Often a TV set within a foot or so of a monitor causes the jitters. When I run two monitors at once I have to separate them or they talk to each other.
 
there are no electronic devices around it but a webcam on top. any other ideas?
 

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