Fred - No. Great thought, but it’s the same problem that happens on many radios where you spin the knob and the volume does what it wants. I’ve seen some videos that recommend spraying contact cleaner in the connection. The way this one is sealed doesn’t seem to help.
Wa8yxm - Great suggestion. Thank you! Sure enough. Still in it’s original package in the cabinet where I put it 10 yrs ago. I’ll get a new battery tomorrow and see if it works.
I’m still interested in putting a 2nd radio so I can leave the camera on and have the radio or map up as well if anyone has done this.