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Here's one more. I keep a mass grave of pulled capacitors, batteries and other bits and bobs from the things I repair.

Hopefully a square is acceptable. This is an original Macintosh dealer sign I picked up this year with a custom base with LED strip I made for it.

Here’s some info about the connectors They’re Molex 2.36mm Diameter Standard .093" A premade pigtail would save you the hassle and expense of crimping your own. This one is just an example. There are a bunch of different length options. Model: 2162911042 View Product Otherwise you could get...

While using a Duo MiniDock, the familiar fishy smell of bad capacitors started filling the air. I took apart the dock and was surprised to see 4 large electrolytic caps inside. I wasn't able to find these documented anywhere online so here you go... 2x 100uF/35V 2x 330uF/16V All are abut...

Now on to the enclosure and frame. You can see from the photos below the rust was quite bad. I used wire brushes on a drill and sand paper to get most of the rust off and sprayed all affected areas with rust-converting spray paint, leaving key areas uncoated to maintain ground. The CD ROM bezel...

The 120uF cap on the secondary side of the PSU had leaked and was way out of spec. The others tested okay but I replaced those I had in stock, ignoring the bulk caps and the tiny caps on the main PCB as well as a couple on a daughter board. Here's a reference in case it's helpful to others. I...

After fixing the first mildly-bombed Quadra 650 I took a shot at repairing the second much worse board. This one had rusted RAM sockets and corrosion on all of the SMD RAM and nearby components. Somehow the reset/interupt buttons and nearby components on the other side of the board were also...

Congrats @Mac84 ! Also, I'm working on a second board. Here's a shot with a lot of stuff in the affected area removed in case it's a helpful reference for others who want a map for continuity testing in that area.

Update: TattleTech recognizes it as a Quadra 650, even though the OS does not. ¯\(ツ)/¯

Inspired by @Mac84 's recent stream working on a battery bombed Quadra 650, I decided to try to repair one of mine. This board wasn't too bad, but the battery holder fell off, one of the battery diodes fell off and surrounding areas were rusted. The tops of the RAM pins were rusty too. Not just...

@This Does Not Compute during your vid there’s a shot of the caps removed where the traces underneath look okay at a glance. It made me think to ask if you inspected all of the traces running underneath the replaced caps carefully. Perhaps one is open or short causing your problem.

Same ones. Didn't realize they were in your repo.

I redrew the logos too in case you want to make a sticker for some reason. My kerning is probably still a bit off, but it's pretty close. The zip contains SVGs.

Modem: 16mm wide ✕ 22mm high. Bottom of cutout is 9.5mm from bottom of door. Power: 14mm wide ✕ 16mm high. Bottom of cutout is 6.5mm from bottom of door.

Here's the photo I posted to discord for reference.

I’ll give the dead chip to someone who can/will decap it and scan the die if that’s helpful. Otherwise will be keeping the bad card for parts.

I swapped in the Gemini from the bad card to the good card. The good card with the bad Gemini failed in the exact same way. So somehow the chip died.

The traces are okay. There was just some crud in that area that needed cleaning. Will try the GEMINI from the bad card on the good card to see if that gunk was the problem or the chip itself is bad.

I swap tested parts from the known-good card. Swapping in the GEMINI from the good card to the 'bad' card resolved the problem. Start-up diags pass and loops work. I'm running some extended APPLE-CILLIN diags on it now. There was some crap under one corner of the GEMINI. Just to be thorough I'm...

Another data point, I ran the ROM self-test by holding ⌘+⌥ during IIe startup. It gets through most of it, including 80 col for a while but eventually crashes just like the loop. Any insight based on where it crashes here? Also, I'm using it in a Color Classic here, but it has the same behavior...