Stupid Magnetic Field Why Won't You Degauss

[brad808]

 
I hate CRTs...... Just kidding I love CRTs but sometimes they make you want to break things

One of my cabinets has a red bottom right corner. Tried build in degaussing, tried corded drill, tried magnets on drill, tried waving magnets around like a wizard. Nothing still there.

Move my cabinet angle, red corner moves (not disappears but definitely could live with it as its in a less important space). Unplug everything in the room, move it away from all walls. Red still shows. The only success I had was finding an angle where the colours were real bad and degaussing, then putting it back in the original spot.... until I shut the machine off and started it back up again, at which point the disscolouration returned in the original spot.

Any tips to make a monitor less sensitive to position in this regard? This is slightly worrying because it's on a cabinet which I plan to rotate the monitor fairly regularly (new astro city). The magnetism changes when I rotate as well. Is my only hope seriously to move the cabinet to another room? I've had degaussing problems in the past but most were easy fixes, this one is insane.

The monitor is a "Vision Pro" Kortek 2938F

Any ideas or helpful hints are welcome


Edit: I've heard of people attaching magnets to the side of their monitors but I would be worried about more damage being caused by this in the long run no?

[grifter]

I had one of these last week.

Turned out to be caused by a magnet that someone had glued to the chassis to fix an issues a while back.  Over time the chassis magnetized and the colors got worse.

I have also seen chassis's get magnetized from tools getting set on them as people work on them (like a magnetic tool tray), I don’t know if this can be fixed, I have always had spare chassis from old monitors to swap out with.

[adder]

assuming your degauss circuit is definitely functioning (you can hear it make that 'boing!' sound when you cold start the monitor), working at the rear of the tube where you can see the degauss coil wire surrounding the edge of the glass, tape down or somehow position the degauss coil really close to/right up against the corner point where you have the issue with red

if you plan to rotate the monitor regularly you should consider converting it to a manual degauss setup instead of 'automatic on cold power up' of the monitor

http://www.ukvac.com/forum/plz-help-me-add-manual-degauss-button-to-circuit_topic328792.html