| Attachment | Size |
|---|---|
 Motherboard uncapped | 4.41 MB |
| R1 and R2 pads | 2.32 MB |
So I'm trying to recap my LCIII motherboard. I managed to remove all of the old capacitors, clean all the pads (all of which survived) but I just noticed that the resisters at R1 and R2 are missing, and one of the pads at R1 seems to have fallen off. The pads on R2 are still there and I cleaned them as well as the remaining pad at R1. The board did work before all of this but would take forever to boot.
I don't know how long R1 and R2 have been missing, but I can't imagine that it's a good thing that they are. The old capacitors clearly leaked but thankfully didn't corrode any of the legs on the ICs. So do I have a problem? Can R1 and R2 be repaired? Do I even need to?
Below are pictures of the board and a closeup of R1 and R2
Update: I was just looking at the closeup and now realize there appears to be some corrosion that I didn't see before. Guess I'm going to have to go over this thing with a magnifying glass.
This may help.
https://archive.org/download/Macintosh68kSchematics/Macintosh68kSchematics.tar.bz2
The LC III schematics are in that set.