Hi. I am new to the forum and recently acquired an Atari ST. When I turn it on I get multi-colored vertical bars (see picture) which won't go away. Anyone any ideas what the problem may be? Thanks for any help.
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I had an ST with a similar fault and that turned out to be a bad shifter chip. The shifter is the chip inside the 'metal box' on the motherboard, if yours is socketed, check it's secure, could be an easy fix
I agree with Spiny, I have heard of this fault before being the shifter chip. Re-seating the chip can sometimes solve it (if, as already mentioned, it is socketed). If it's an early 520ST then I'm guessing there's no composite output (to a TV) that you can also test with?
use a small safety pin bent to lightly scratch thru any oxidized pins and terminals on the shifter and shilter socket I feel whatever lead chrome tim aluminum they comprised the ic socket from probally has built a tid bit of resistance over the years
The radioactive half-life : ) Atari is a lifestyle,not a hobby. HOLD ON ! ! ! Im printing unreadable characters ...!