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I have a dead 50mhz P33 Powercache. It neither powers nor caches. No obvious damage or corrosion. Tried swapping CPU, FPU, oscillator. Checked all the caps and resistors. I just get a bright, blank screen in an otherwise healthy IIci. At this point, I wonder if a previous owner plugged it...

I've been tearing my hair out troubleshooting an otherwise healthy SE/30. Adjusting brightness, either from the adjustment wheel or directly on the analog board, results in noticeable bloom (screen increases in size). When I click a menu or open a window, display shows slight horizontal shadow...

Hi! First: claanu = chiptripper now. (I'm working on a vintage Mac project and figured my username should match.) I've been finding lots of stuff lately, so I'm making a thread. Earlier this month I bought a sad, broken IIGS. It's clearly had a rough life and I paid a lot for it. Why...

So I have a Color Classic with dark blotches on the display, and if the degaussing coil is working, it's not doing anything. What did make a difference was placing a couple of small magnets at the top left and bottom right corners of the screen, right on the CRT mounts. That cleared the screen...

I found an SE/30 locally after years of looking, got it for a good price. When I showed up to pick it up, they handed me the original carrying bag, manual, keyboard, mouse, and a SCSI ZIP drive. Wow! So I was feeling pretty good. But then I got home, started opening it up, heard the rattle. You...

So I've been fixing up a trio of CC. I have a strange symptom that I can't sort out. There's a horizontal line about two thirds of the way down the screen. It's very faint and honestly not a big deal, but I'd like to fix it if possible. At first I though it was just an anomaly, but this same...

I paid a bit too much for this machine, but the universe rebalanced itself when I found this little PDS accelerator tucked inside. Can't find a brand but looks like a low cost (RP) 25mhz 030.

Hi, I'm in the process of recapping a bunch of LC power supplies. I can't find a reliable supply of large snap-in caps (180uf 400v.) They have to be very low profile, 25mm or less, or else you can't put the PSU back together. (I learned this the hard way.) Here's my question: will I run into...