(14-07-2020, 02:40 AM)Crud3 Wrote: Ok that is good to know!
I tried getting to the Monitor by holding M and pressing Reset but nothing happens...
Makes me wonder if this is the keyswitches acting up or something else! Are there any other shortcut keys that I could try?
Otherwise I will check the PSU in the disk unit and try to write a boot disk to get somewhere were I can test the keyboard!
Why not start with these elementary steps.
Power off the microbee, then using ESD precautions remove the FDC IC from the top board and then power up again.
Depending upon the installed ROM, the cursor at the top left hand corner should suddenly show an 'N' inside or jump straight to the monitor it if it is still working
Also it is a good idea to keep an eye on the tantalum capacitors. Due to their age they may spontaneously go BANG! or go on fire or both.
Also, be aware that big orange capacitor of the base board will also have lost a fair bit of its capacitance.
What do you have in the way of desoldering equipment?
Once you've sorted out how to your desoldering equipment, the first keys to repair or simulate are the RESET, M, ENTER and ESC keys.
Also you video output shows signs of electrical interference caused by the microbee itself.
You'll probably have to address it once all of the basic functionality has been restored.