Hello again Kaypro fans, I've got a Kaypro 4 with a PC81-240A motherboard and 81-232 rom. The machine boots and shows the disk directory on startup. The problem is that the keyboard makes the audible clicks but no characters are shown on the screen. I've tested with other known good keyboards so that's not the problem. I've swapped all the socketed chips. A Google search found another person who had the same problem but he never got an answer. I sent him an email but I haven't gotten a response yet. I've also resoldered the keyboard jack to the mobo. Jiggling the keyboard connector doesn't help. It looks like the wires in the jack are OK. Anyone got any ideas? TIA Ralph