I'm in Dominica working with a donated TM-741A. The internal memory backup battery lasted just long enough for me to learn three things:
- there's a backup battery;
- it's dead;
- there's no manual describing where it is in the radio, what type of battery it is or how to replace it.
Can anyone tell me how to replace it? I'm hoping one of the spare "watch" batteries in our SCUBA dive computers will fit.