I've heard of instances with icom radios and that stupid modular jack like 
the 706 has where sometimes the contacts can get bent. I wonder if that 
happened to you and maybe there is a very slight manufacturing difference in 
the 2 mic plugs, maybe so minor you can't even tell but the minor difference 
and minor bent contact is the problem. If it's working I wouldn't worry 
about it, I'm just saying I've heard of those contacts getting bent and it 
doing funny things, or, it could be that something is bent in that rear 
panel but it's a contact not in use on the hand mic like the voltage one 
which is usually the one that happens to as a matter of fact. I think the 
SM-20 uses the voltage from the radio and the hand mic doesn't. Just a 
thought but that sounds like what it is to me. Where the rear mic jack has 
the problem and the front face plate one doesn't, plugging it in to the face 
plate will have to do for now.
----- Original Message ----- 
From: "Junior Lolley KG4ITD" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, May 05, 2013 8:32 PM
Subject: radio problem fixed


>I can't explain it but after a lot of headaches and looking the radio is
> working again.
> I have no explanation for this but the sm-20 desk mike was plugged into 
> the
> back mike jack for the 706 mark II g.
> I unplugged the desk mike and plugged in the hand mike and the radio came
> alive.
> I plug the desk mike back in the rear mike jack the radio goes dead.
> Now I plug the desk mike into the mike jack on the detachable face plate
> mike jack and the radio is just fine.
> I can't figure out why the hand mike will work on the rear mike jack and 
> the
> desk mike won't.
> But the desk mike works great on the front mike jack.
> But any way the radio is back on the air.
>
>
>
> Junior Lolley
> Amateur radio call KG4ITD
> Liberty County Emergency Coordinator
> "Be careful how you treat people on your way up because you might meet 
> them
> again on your way down!!!"
>
>
>