While attempting to fix a C64 motherboard I mistakenly swapped PLA's into the SID socket... guess what?... PLA's don't like 12V :-( A long shot, but does anyone have any spare PLA chips? They don't seem to show up on eBay very often these days... I know I can get work-alike replacements for about $10 each but I'd like to try to find real chips first if possible. Steve