i was geven an old apple work decent for a while then the hard drive crashed and i think the degausing coil may have failed. because the monitor (CRT) cow is smaller than it should be it has black around the edges and the part that is showing has a outward curve in the center of the L/R sides. i looked it up it soundsl ike ther're suposed to dagause at boot. but has no afect. i have a old electromagent ment to erase old vidio and audio tapes. thought about trying to use that to do it but dont know how and afiad it may make it worse. (i beleve this is a degausing isue). havent seen setings to adjust that made any diference with the problem.