A500 failing?

[hotdiggity]

Unfortunately the saga continues. I think Harrison might have been right about the motherboard because the symptoms came back this evening.

I was transferring some ADFs to floppy via transdisk/ADF Sender Terminal with a serial cable & null modem. Things looked good, the first disk transferred in ~8 minutes (about normal based on past experience), but then the next disk took a whopping hour and 45 minutes! That's when I started to suspect something was up.

I tried booting from the new disks and they didn't work; I tried looking at them in Workbench and I was told they were bad. I did another and it took 43 minutes and then I noticed some graphical artifacts on the screen. I moved some windows around and the artifacts took over. See attached #1.

For kicks I pulled the RAM expansion out and put it back in. I flipped the power off and then back on. The first time it just stayed at a blank white screen. The second time it presented me with the insert disk screen with artifacts (attached #2 - note that the weird bendy swirly lines are actually from my TV screen). It won't recognize any disks.

Any other ideas or things for me to check? Should I rip it apart and look for a leaking battery? Is she a goner?