This system was in really poor shape when I got it. Not only did the Ni-Cad clock battery leak all over it, there were mud wasp and spider nests all over the insides. They guy at the flea market assured me it worked when it got it and he kept it indoors, but the ST-225 that was in it made a horrible screaching sound--so since it was shot I popped the lid and I saw it had standing water in it at some point.
The motherboard looked terrible, but after lots of careful scrubbing in warm soapy water, distilled water rinse, and baking dry at 200F it looks pretty good except for the battery damage which is actually almost unnoticeable. The broken connections are all directly under the 3rd ISA socket on the component side and pretty much impossible to fix properly. I can't see the damage without removing the sockets, so I just jumped the broken connections from underneath.
To make matters worse, when troubleshooting the dead ISA sockets my probe slipped and jumped +12 to D0 and completely killed the board. Luckily I found schematics and traced the problem back to three fried Octal Bus Transceivers and I was able to repair it easily enough.
I've been looking on ebay for a few days and don't see much. One guy has (had) a pair but I think he was asking $50 for one with out ram....too rich for my blood for such an old system.
This is just a time wasting project to keep my busy...nothing important. Unless anyone here turns up with a cheap spare, I'll just stick with my patched up board. It works 100% now, it just looks nasty when the motherboard is out and flipped over.
I actually have another 5160 in nice clean condition with a factory 640K motherboard and a Breakthru 286 12MHz accelerator board. It has a pair of RLL'ed Miniscribe 60 meg drives as well. I also have a 5150 (still restoring) and 2 XT clones including a sweet Mitsuba NEC V20 system with AST SixPak Premium adding 2 megs of Expanded memory. All of them have VGA too.
