A500 Rev6A Board and Kickstart 3.1

[zipper]

No, you are right, it should work so (I have it working). Contact problem or wrong orientation/all pins not in the socket?
Test again 3.1 in A2000 and 1.3 in A500 and again 3.1 in A500 - hopefully nothing is broken.

[zipper]

A normal memory expansion should be OK, as I have a 501 clone .5 MB expansion on my puter, as well as Megachip2 giving  me total 2 MB Chip. Perhaps your mobo is somehow modified; are there jumper wire(s) to be seen. Is the memory expansion a "normal" one? Odd...