turning cabinet

nd4w

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is there any solution to having a great picture on my toobin, then turning the cabinet and getting purple on the right side? It's like there is a magnetic field when i turn it where the purple comes in
Thanks
Mike
 
thanks

I use bob roberts site almost daily, in fact have another order on the way, I will read the thread you posted
Mike
 
Additionally...

There's less in the sticky thread than I thought about degaussing... and BR only mentions some of this in passing.

(If your monitor's degaussing coil is good, and plugged in, and the and circuitry is working...) Your monitor degausses itself every time you turn it on cold. This is usually accomplished by a thermistor that warms up, increases resistance, and stops flow to the coil. As a result, the degaussing is very brief, and will not recur immediately if you just power cycle the monitor/game. You must wait for the thermistor to cool down before it will permit current to flow to the coil again; give it an hour or so (though I haven't actually measured the time required).

The point is that a "wait and see" approach may work. I recently put a game in my garage, and at first it had some definite discoloration--it needed degaussing. I was too lazy to go get my degaussing coil, remove the glass, etc, so I just left it. After a week or two (and a dozen or more cold power-ups), it had "fixed itself." The degaussing coil operated briefly every time I turned it on, and finally the discoloration was completely gone.

If your degaussing system works, you are patient, and the magnitization isn't "too bad", this may work for you. If your degaussing system is jacked, or if it's "bad enough," manual degaussing with an external coil may be required.
 
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I get purple on the sides or corners often for which degaussing, even with a pretty strong coil, will not fix. As I'm degaussing I can see the color returning to normal intermittently, but it stays purple once the coil is off.

When this happens it's not an issue of degaussing it, but something interfering with the monitor. Case in point; in my Neo-Geo big red with a 25" Kortek, there was blurry strong purple in the corner. Degaussing did not correct. Ended up moving the cabinet position but it was in the same room. Purple corner completely gone on power up.

As time went on, purple began to creep back in all along the left side. Degaussing did not correct. Moved cabinet around (actually, 1 foot to the left) and purple reduced, but slowly creeping back in.

Long story short is that something in the room is affecting the monitor. If that happens to you and a degaussing coil does not fix the monitor, it's something else and moving it to a different location is the appropriate action.
 
Yes, it can certainly be caused by things in the room, or even in the cabinet.

Potential culprits that could have magnetic fields that interfere (mostly ones I've read about): large appliances with motors, rebar in concrete, pipes in walls, power tools.

And inside the cabinet, the speakers (esp. non-stock size or location) can cause issues. There was a guy around here a few months ago that traced the problem to a magnitized monitor frame. Removed it from the metal frame, mounted in another one; problem solved.
 
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