I bought a non-working SE last week and sadly, the Maxell bomb had already gone off.
NOT FOR FAINT-HEARTED
Already fixed the chassis with some white vinegar. Looks great. Might give it another bath just for good measure (there are still a couple of rust stains left).
I don't have too much time to work on the SE at the moment. (We have exams every 3 months or so at my university. I know, I always say that, but it's true! Unfortunately... But next week-end I'll have more time on my hands.)
Initially the display was filled with the checkerboard pattern.
So, I pulled the ROMs out, tested them on a known good unit. They work fine.
Then I bathed the "dead" board in some really hot soapy water for at least 2 hours. I used a toothbrush to clean the parts around the battery compartment.
Here's how it looks right now:
I can't seem to make it look any better. Any advices? I already tried isopropyl alcohol.
Anyway, it now displays the Simasi-Mac pattern. Yes, the exact same Simasi-Mac pattern as found on the SE/30. No chime, no activity.
Now, I know there are two missing caps (big axial one near the battery terminal and a small tantalum? one near the speaker cable) so it wasn't supposed to boot anyway. The traces look good though.
Do you think I should replace those two caps, remove & clean the sorry-looking chips and then add new fresh solder to all the joints near the crash site? Or is this board too far gone?
Edit: All the damaged chips are as follows:
2x 115-0002 serial filters
2x 26LS32 (RS-422 Interface)
1x SCC chip.
Technically, a Mac SE boot without serial right?