Finally! 
Since the last post I have managed to refurbish the keyboard to complete working order... a lot of desoldering and resoldering of keyswitches!
As a sidenote I would like to point out that the keyboard repair guide mentions that you can exchange the resistor network at RN1 from a 10 pin SIP 3.3K one to a 10 pin SIP 10K one and change IC3 from a 74LS151N to a 74HC151N and see if that helps before starting desoldering and refurbishing the keyswitches! I think that the correct chip to change should be IC4! On all the schematics and my motherboard IC3 is a 74LS157N while IC4 (next to RN1) actually is a 74LS151N...
I also managed to find an original Microbee monitor and recap the powersupply in the screen! It had a small crack in the bezel which is now repaired!
The only thing still to do is to respray the bezel matte black where the crack was but it is now to the point where I am prepared to call it finished!
![[Image: finished.jpg]](https://i.ibb.co/tZNB0s0/finished.jpg)
Thank you so much for all the great tips and feedback from you guys!
Since the last post I have managed to refurbish the keyboard to complete working order... a lot of desoldering and resoldering of keyswitches!
As a sidenote I would like to point out that the keyboard repair guide mentions that you can exchange the resistor network at RN1 from a 10 pin SIP 3.3K one to a 10 pin SIP 10K one and change IC3 from a 74LS151N to a 74HC151N and see if that helps before starting desoldering and refurbishing the keyswitches! I think that the correct chip to change should be IC4! On all the schematics and my motherboard IC3 is a 74LS157N while IC4 (next to RN1) actually is a 74LS151N...
I also managed to find an original Microbee monitor and recap the powersupply in the screen! It had a small crack in the bezel which is now repaired!
The only thing still to do is to respray the bezel matte black where the crack was but it is now to the point where I am prepared to call it finished!
Thank you so much for all the great tips and feedback from you guys!