[Icom] IC-2340H Problem

[Herb Gerhardt, KB7UVC]

I own an IC-2340H mobile radio.  It has worked fine for the last 7 years but
recently developed an intermittent problem.

When in dual band mode, the audio goes bonkers when it is receiving a signal
on the UHF band.  At time the volume gets real loud and the volume control
knob has no bearing on the volume!  At other times the audio sounds real
tinny and very low volume and again the volume control knob has no bearing
on the volume!

Being an A Number One Troubleshooter, I bang on the radio and the volume
returns back to normal including changing levels vial the volume control
knob.  Obviously this is an intermittent problem which almost sounds like a
cold solder joint which surfaced after 7 years of operation.

When putting the radio in single band mode on the UHF only mode, the same
problem exists.  When putting the radio in VHF only mode, there is no
problem on the VHF side.

Has anyone ever encountered a problem like this on their IC-2340H?  If so,
what did you do to fix it?  I would like to fix it myself if at all
possible.

All suggestions are welcome,

Herb, KB7UVC
NW APRS Group, West Sound Coordinator
Our WEB Site:  www.nwaprs.org