Posted by: Iesca on 2024-05-07 18:58:24Roommate brought home an M1212 from his place of work that was gonna be tossed, but boy is it in rough shape. Filthy, with a cracked bezel and a missing stand, just to start. After managing to pry off the back of the chassis I blew it out with an air compressor and shook it out. It clearly spent some time in the outdoors, and a rodent of some kind made it a home at least for awhile; plenty of feces came right out, in addition to a couple of acorns and tree litter that were hiding in there.
Despite all of that, the board appears to be in reasonable shape, save for a chewed up wire and the rubber cap at the base of the flyback. Going to try and get it cleaned more thoroughly with bleach and wipe everything down, just to make sure it's safe to handle. Replacing the caps and that wire should be easy enough. I have of course not turned it on or even plugged it in.
However dirty it appears in these pictures, it was assuredly much worse before wiping it down with window cleaner...
Those two metal tines, I'm thinking they were from the stand, as I don't see them in the blow-up diagram at the end of the M1212 Service Source.
Posted by: Iesca on 2024-05-08 03:43:50Some more photos of the disassembly. (The tines it turns out are grounding fingers that broke off the bottom crt plate.)
Posted by: LaPorta on 2024-05-08 04:07:13Believe it or not, I’ve got. Bunch of M1212 parts I was going to toss that might help you. Send me a PM if you like.
Posted by: robin-fo on 2024-05-08 04:18:27The M1212 (Macintosh Color Display) is a great display and worth saving!
Posted by: Iesca on 2024-05-08 14:59:20@LaPorta PM'd!
@robin-fo We'll see what happens! Just finished dismantling it last night and showering out the shell...
Posted by: slipperygrey on 2024-05-09 21:47:03Love the M1212. I’m rooting for it. 🙂
Some time ago I compiled a cap list for the boards over at TD, if you ever need a reference.
While working on refurbishing a Macintosh Color Display M1212, I took the opportunity to record the electrolytic capacitors on the "analog board". There didn't seem to be any electrolytics on the neckboard. Location Capacitance (μF) Voltage...
tinkerdifferent.com
Posted by: Iesca on 2024-05-09 21:57:37Thanks! I'll definitely use it to double-check everything.