I would like to do the CR2032 coin battery install in my Amiga 3000T. I was wondering if I could desolder and remove R192 and replace it with a 1N60 diode.
Yes, replacing R192 with a germanium or Schottky diode would work fine. Obviously the anode side goes to battery + and cathode (stripe side) to U190 pin 18. You won't need any other modifications than that when replacing the battery with a coin cell.
For a more detailed analysis of the entire battery and diode topic, read my posts in
this recent thread.
