I think this repair is interesting because I've never had such precise diagnostic error codes displayed on any computer I've repaired before - for a mid-80's computer to tell me exactly what is at fault is highly impressive. Even though from what others have posted, I appreciate that it usually doesn't work this way But old Apple designers would be pleased to note it did for me, many years later. In addition, having two chips fail is seemingly quite rare as well (although if a stick of RAM you'd just chuck it and move on), so I'm quite chuffed at the repair and how well it worked out, just following the Sad Mac codes.

Having fired it up - my suspicions about it not being used in recent times were wrong! Would you believe it was only decommissioned in 2000 - apparently having been used by a wealthy stock investor to keep tabs of his dividends, bills and letters. The (original) MacWrite disk is jammed hard in the floppy drive, so much so I can't even eject it using the sliding mechanism - the grease must have dried up to a solid. The good thing is the floppy drive (and disc) work fine, so I'll be extra careful freeing up the mechanism to bring it back to life again.

One other question - where is the Shut Down command for System 1.1?

JB