antimagnetic

You can buy an anti emf device at electronic store. Have you try plugging in your monitor directly to another outlet with or without surge protector? maybe you can rearrange your desk.

Here is a link to a mu-metal shield for PC monitors.

http://www.magnetic-shield.com/products/ig.html

They use a special metal to block and absorb magnetic radiation.

This is very common if there is a large Power conduit in the wall or ceiling near your work-station.

Another possibility, is that the degaussing circuit on the monitor has failed, and is staying on all the time.
You can check for this by moving the monitor to a different PC.

Unless the power line near the building is a 'primary' high voltage line, it should not cause any problems if it is more than 30 feet from the PC.

Chas

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