Purchased two of the keyboard replacement kits today! 
One as an "insurance policy" for my Microbee 128k SBC shown above! The other for a recent pickup of a PC85 32k Series 3 with the battery backed up Basic!
That last one has a weird issue when it boots up and shows the startup message! As soon as the > basic prompt is displayed it acts like someone is pressing the 1 key. The line fills up with 1's and just keeps going.
The guy I got it from had tested the fix from the keyboard repair guide and replaced IC4 with a LS74HC151N and RN1 with a 10K one instead of the 3.3K original! I think he might have gotten the wrong resistor network type! He got a 10 pin (which it is) resistor network with 9 resistors! Is that correct or should it be a 10 pin with 5 resistors?
One as an "insurance policy" for my Microbee 128k SBC shown above! The other for a recent pickup of a PC85 32k Series 3 with the battery backed up Basic!That last one has a weird issue when it boots up and shows the startup message! As soon as the > basic prompt is displayed it acts like someone is pressing the 1 key. The line fills up with 1's and just keeps going.
The guy I got it from had tested the fix from the keyboard repair guide and replaced IC4 with a LS74HC151N and RN1 with a 10K one instead of the 3.3K original! I think he might have gotten the wrong resistor network type! He got a 10 pin (which it is) resistor network with 9 resistors! Is that correct or should it be a 10 pin with 5 resistors?