Hello. I received today my true usb programmer. First time i used it with plcc32 to dp 32 adaptor to read,write 28F512 eproms. All worked great. Second time i tried to use this adaptor i have a problem. I place 28f512 eproms and can't recognise nothing. It can't find the id. After some tries i understood that there is a band contact between eprom and plcc32 socket. What can i do with that? Are these adaptor problematic? I use 10 eproms and after that has a prob in contact?
The socket adapter has limited life cycle. Some of PLCC sockets only have a few times good chip insertion. It is best to use a ZIF version adapter instead of socket type.