[Alinco] Alinco DR-610 with no xmt audio

[Ken Simpson, W8EK]

I have an Alinco DR-610, which I think is a great rig, however, 
it has developed a problem.  Probably I should say I made it 
develop a problem.

As we all know, these modern radios have some many bells 
and whistles that one can not use all of the things that are built 
into the radio.  Since the DR-610 is capable of cross banding, 
I decided I should try that out, and see if I could talk to my wife 
(N8AJU) on a 2 meter HT, while I was using a 440 MHz HT.  I 
read the manual, did what was needed, and all worked well.  
It was really neat!

Once I was done playing with the cross band part, I put it back 
into "normal" mode, and thought I should check it out and make 
sure all was working.  That was my mistake.  I can now put out a 
very nice carrier on either 2 meter or 440 MHz, but absolutely no 
audio when using mic attached to rig.  I tried cross banding again, 
and all of the audio is fine.  Back to normal, and no transmit audio.  
Next thought was a bad mic (at the same time as doing the cross 
banding seemed to not make much sense, but I have seen many 
strange things over the years).  Unless I have 3 bad microphones, 
that is not the problem, plus the mics work fine on other rigs.

I am assuming I did something when I did the cross banding, but 
can not figure out what.  As much as I hated to do it, I decided a 
complete reset was in order, so I did that, lost all of the info in 
memories, and still have no transmit audio when using the microphone.

It seems highly unlikely that I killed the microphone amplifier at the 
same time as doing the cross banding, but I suppose anything is 
possible.  Since I have done a complete reset, it seems that it must 
be something related to the microphone amplifier, however remote 
that would seem.  Audio is still fine when cross banding, so all of the 
deviation circuits in the transmitter must be OK.

Does anyone have any suggestions?  Anyone ever seen this before?

I appreciate any suggestions anyone might have.

Thanks.

73,

Ken, W8EK

Ken Simpson
E-mail to W8EK at speakeasy.net or W8EK at arrl.net
Voice Phone  (352) 732-8400