Bolle: "unusual" is probably a mild description. Step 3 from the FAQ strikes me as incredibly bad advice.
The mains voltage is AC at 50 or 60 cycles per second. This means that the degaussing coil alternately magnetises, demagetises and then magnetises with the opposite polarity 60 times per second. Unless you happen to pull the wall plug at EXACTLY the instant that the mains voltage crosses zero volts, the technique in step 3 of the FAQ will almost certainly make the problem worse (possibly much worse), not better. The same applies for using a fixed magnet to try to fix the problem.
As technknight has described, the on board degaussing circuit operates by starting out applying full mains voltage to the degaussing coil, then decreasing it to zero over many mains cycles. This effectively demagnetises the CRT.
The proper way to degauss manually is to use a degaussing wand. With this, the technician turns the power on with the wand well away from the CRT, then brings it closer while moving it in a cicular pattern around the CRT. The wand is then slowly withdrawn a couple of metres and the power turned off. Degaussing wands emit a more powerful and concentrated magnetic field than the built in coil and can remove persistent purity problems that the built in system can't handle, or that it would take many "power on from cold" cycles to rectify. They can also do a great job of demagnetising any floppy disks or credit cards in the vicinity ;- )
The mains voltage is AC at 50 or 60 cycles per second. This means that the degaussing coil alternately magnetises, demagetises and then magnetises with the opposite polarity 60 times per second. Unless you happen to pull the wall plug at EXACTLY the instant that the mains voltage crosses zero volts, the technique in step 3 of the FAQ will almost certainly make the problem worse (possibly much worse), not better. The same applies for using a fixed magnet to try to fix the problem.
As technknight has described, the on board degaussing circuit operates by starting out applying full mains voltage to the degaussing coil, then decreasing it to zero over many mains cycles. This effectively demagnetises the CRT.
The proper way to degauss manually is to use a degaussing wand. With this, the technician turns the power on with the wand well away from the CRT, then brings it closer while moving it in a cicular pattern around the CRT. The wand is then slowly withdrawn a couple of metres and the power turned off. Degaussing wands emit a more powerful and concentrated magnetic field than the built in coil and can remove persistent purity problems that the built in system can't handle, or that it would take many "power on from cold" cycles to rectify. They can also do a great job of demagnetising any floppy disks or credit cards in the vicinity ;- )