That’s exactly what I thought when I looked at it. I’m going to use IPA on just the board. I was worried because literally the entire top of the board was covered with capacitor liquid, and I wanted to make sure I got all of it.
I’m using SRA TruPower #35 and distilled water, usually at 50C for 5 minutes per side. I have plenty of IPA so I am probably going to carefully wash just the board with that.
I just finished recapping the analog board and power supply in an SE/30. I have put many PCB in my ultrasonic cleaner with no issue, but this Sony power supply has some components on it that look like they might not like the ultrasonic bath, like whatever this one that looks like a roll of tape...
I wish that was it. I tried disconnecting the hard drive and got the same result. Then I tried disconnecting the floppy, then I tried disconnecting both, with no difference. Since I have two of these computers I still have a known-good logic board I can test with, and it boots fine with this...
Well copying the known-good ROM onto a fresh AT27C010 fixed that issue, but now I have a problem where the recapped board boot loops once and then sad-macs with code 0000000F 00000001, no matter what ROM I use in it.
I’m in Reno Nevada. I have two with the same 4-chip board, so I’m going to try copying the known good ROM I have first, before I look for a donor board. Thanks for the help though.
This did help. Since I have a working #4 chip already, I am going to just copy that one onto a new chip, as Bolle suggested. I ordered a programmer and some blank 27C010 eproms. They are apparently still readily available in DIP32.
I have two Classic II's that I have been working on restoring. This is my first re-cap adventure.
I recapped one of the logic boards with tantalums, then cleaned it with an ultrasonic bath and PCB cleaner. When I put the ROM chips back, I accidentally plugged one of them (U25) in backwards, but...
I was able to boot to an 8.6 install CD and connect to my Linux server over AppleTalk so that I could format the SCSI2SD with Lido. It would have been a lot easier with a USB floppy drive! I threw 8.6 onto the SCSI2SD since I knew that version worked.
I recovered 90% (I didn't copy some...
Hard drive sounds bad. Knocks for awhile, then works normally, then starts knocking again. More picture momentarily.
Startup chime is like Shwa-na-na-na-na...
The USPS Gods have brought the mouse a day early, as a sign that they favor this endeavor!
I now have everything I need to boot this beast. Here we go...
Oh yes, I understand. I stare longingly at TriPEx™ every day and suppress the urge to boot it and then pull the plug at the desktop. My SCSI2SD and PRAM batteries arrive today, and the mouse gets here Saturday. :)