mf1@ukc.UUCP (Michael Fischer) (01/20/86)
[] My Mac video just failed. Basically the screen is almost blank, except for a faint vertical line in the center of the screen (at highest setting). It seems to work otherwise (ie boots, and pulling up desk accessarys makes the disk whir). Could anyone give me any information at all as to what part in driver is likely to have failed. (ie has it happened to you). Thanks Michael Fischer seismo!mcvax!ukc!mf1
hedges@calma.UUCP (Tom Hedges) (01/21/86)
>My Mac video just failed. Basically the screen is almost blank, except >for a faint vertical line in the center of the screen (at highest setting). >It seems to work otherwise (ie boots, and pulling up desk accessarys >makes the disk whir). > >Could anyone give me any information at all as to what part in driver >is likely to have failed. (ie has it happened to you). > I experienced a similar failure, it was a cold solder joint on the connector to the CRT yoke (a 4 pin Molex connector near the top of the video/power suplly board). You have to remove the paper backing to get at the traces on the board to resolder it. It is a good idea to check the whole board for bad solder joints as many weird failures are due to this. If the horizontal circuit had failed completely there would be no high voltage to CRT and thus a completely blank screen. Tom Hedges