68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
Macintosh IIsi (Battery acid eaten)
Posted by: quantumii on 2011-10-07 06:13:29 Hi, I rescued a Mac IIsi today. I opened it up, and it is missing its hard drive. The battery has also leaked, corroded some areas here and there on the motherboard. A small SMD cap near the battery also fell off, but it is not broken, so maybe after the cleanup, I can solder it back on. It looks quite bad right now, but I think it looks worse than it actually is. I will pull out the motherboard and give it a good cleaning, and see if things are working after that. All 4 RAM slots are populated, but the larger SIMM next to the RAM is empty.
Posted by: trag on 2011-10-07 11:51:07 I will pull out the motherboard and give it a good cleaning, and see if things are working after that. All 4 RAM slots are populated, but the larger SIMM next to the RAM is empty. That larger SIMM is for a ROM upgrade that was never made. The ROM should already be soldered down on the IIsi logic board (unless it is a fairly rare model) so it should not matter that that socket is empty.
Posted by: olePigeon on 2011-10-07 12:36:53 I will pull out the motherboard and give it a good cleaning, and see if things are working after that. All 4 RAM slots are populated, but the larger SIMM next to the RAM is empty. That larger SIMM is for a ROM upgrade that was never made... Until now! 😀 Official ROM Hack thread.
Posted by: quantumii on 2011-10-10 01:29:22 The machine was a lost case. I started to clean the motherboard with a toothbrush, and chips fell off. Many legs on the SCSI controller chip (I think) had also been eaten away by the acid. I salvaged the PSU, the floppy and the fan. Might come in handy some day 🙂
Posted by: Unknown_K on 2011-10-10 07:54:16 If the machine had a Nubus adapter you might want to save that as well (or FPU).
1