Over the weekend I managed to get my LC520 back in working condition. Boots from HD just fine, but looks like I need to boot from a floppy and run Disk Tools. It thinks the HD is mostly full when there's really not much on there. At least it works after washing the motherboard(I love how easy it was to remove and re-install) and letting it dry for 3 or 4 days. It had been in storage and was dirty but I guess otherwise it was OK. Also replaced the PRAM battery. Now if only my Classic II were so easy.