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Which is the corroded trace in that image? The one right down the center, to the left of Y1? Pictures are here, as the uploader seems to be having issues. Thank you so much for your assistance.

Just to clarify, this is an original LC, which doesn't appear to have "36064" (it instead has "34064") and has a 020. Pin 15 is immediately (or as quickly as I can get my probes on it) pegged at 5.08V, so at very least it doesn't seem to have the same issue that you mentioned. I wish I had a...

Did a dishwasher cycle (low heat, no soap) on both this LC board, and the new LC III one that came with my new PSU. After sitting in the oven at 170F for an hour to dry, both boards show no changes. The OP LC board does have corrosion on several of those 8 pin ICs, but I don't know how to solve...

Tested the voltage on the new PSU. Everything seems to be within specifications. When plugged into the LC, at first the machine didn't do anything other than turn the fan on (solidly though, this time). After a few power cycles, I got a lot of static from the speaker, which appeared to be...

Ah, thank you. Sorry for throwing you off about the Debian mention, cat /etc/os-release had Debian info, and I wasn't aware that Ubuntu didn't change that. I just needed to change the enp0s3 reference (the VirtualBox's network interface) to the one that my VM had, which happened to be ens160...

@mactjaap, what did you do to set up the tunnel and NAT? I am attempting to run your VirtualBox image on my ESXi (VMware) cluster, but am encountering some issues. The ESXi network interface ended up recognized as a different interface in Debian and wasn't connecting to anything, but that was...

I'm fairly certain it's not caps, as I just recapped mine (with the exception of the very large one, which supposedly doesn't go bad often). I have a broken LC III coming in with a supposedly good PSU, so hopefully I'll be able to shed some light in a few days.

That would be a fun project. It is such a difficult project to properly classify everything, however, which makes a lot of eBay automation mostly useless.

To avoid issues like that (and to avoid damaging anything), I have removed everything except the logic board, PSU, and fan/speaker assembly.

I recently recapped a LC and TDK PSU that was entirely unresponsive. As seems to be somewhat typical for the LC, several caps had fallen off of the board and the traces were very corroded. Before I started the recap, I did the heating test on the PSU, which greeted me with some signs of life...

Here's what I ordered and some relevant information. Maccaps PSU Voltages All caps are radial through hole. Core: - 1x 270uF 10V 6.3mm diameter 11.2mm length - 2x 270uF 25V 10mm diameter 12.5mm length - 1x 56uF 25V 5mm diameter 15mm length Secondary (as per 68kmla): - 3x 1000uF 10V 10mm...

Yes, hot air does work a lot of the time. If that fixes it, you need to do a simple recap. If you're interested, I can send you a part list for easy ordering from Mouser.

A few more mentions of this hardware: https://www.fenestrated.net/mac/MacLC/index.html and the related discussion here, along with screenshots of a board like mine https://ancientelectronics.wordpress.com/2017/09/28/macintosh-lc/.

Interesting. Any idea why so many exist? Seems weird for them to label so many machines with a supposedly GM version of the ROM, along with the cuda switch.

I was beginning the recapping process on a recently received LC when I noticed printed labels on the LC's ROM chips. In addition, when I initially received the machine, I was struck by some sort of red reset button inside the case, but assumed I wasn't familiar with the LC internals. I did some...

I have returned after a long absence, though I imagine no one remembers me (unable to access my old account, unfortunately). Nearby I have found someone offering a supposedly working 128k with keyboard, mouse, and maybe a few other accessories. I just picked up several other old Macs, so I'm...