I just picked up a Compaq Portable from eBay. Sold as non working, some quick detective work found a paperclip floating around inside the machine, a bad cap on the floppy disk board, and a bad cap on the motherboard.
This one on the floppy board was easy to spot:
Which I think damaged this one on the motherboard:
That cap sits between the -12v rail and ground. It was short. One question though... how do you read the value on these caps? Is that one 10mf at 16 volts?
Thanks,
-J