Hi guys,
You may (or may not) be interested in some issues I've had with my Commodore
PET. It's certainly educated me about the vunerablility of old sockets.
http://www.classic-computers.org.nz/blog/2011-07-13-pet-fixes-part-1.htm
http://www.classic-computers.org.nz/blog/2011-07-13-pet-fixes-part-2.htm
Cheers
Terry (Tez)