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Back when I lived in the dorms in college, I had a metal loft bed. My desk, with computer and monitor, was underneath it. At the end of the year, I gave back t
by scott_s 14y ago
Back when I lived in the dorms in college, I had a metal loft bed. My desk, with computer and monitor, was underneath it.
At the end of the year, I gave back the loft. The next time I turned on my monitor, the screen was messed up. Distorted with purple waves. I stared at my monitor for a few moments, baffled.
Then I hit the degauss button, and everything was fine. My monitor had been normalized to the presence of a metal frame around it, distorting the magnetic field.
- dghughes 13y agoSometimes even in a room made of wood no large metal objects nearby and then moving a CRT monitor 90 degrees is enough to mess it up requiring it be degaussed. I'd say the metal frame had ferrous metal in it which is magnetic your monitor was affected by it, I can't see if fixing it. Once removed the source caused your monitor to require degaussing because a large source of nearby magnetism was removed. As to why it wasn't affected right away when it was new my guess is a lot of monitors have built-in degaussing each time it is powered on, so gradually the metal nearby was affected by the degausing coil in the CRT monitor. When metal bed frame was removed the loss of such a large piece of nearby magnetism was too much for the normal start-up automatic degaussing to handle.