"Nick Alexander" writes:

I have got some green patches on my TV since I moved my speakers too close
to the tube. Can I use a magnet to get rid of the colours?

In principle this is possible and I have used it in a pinch but the
proper AC degaussing coil approach is much easier.

See the CRT FAQ: http://www.repairfaq.org/sam/crtfaq.htm .

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