Help icon ic 706mk2g no audio out

A place to discuss all aspects of amateur radio operation.
Post Reply
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Help icon ic 706mk2g no audio out

Post by 26zak »

Hi all hope somebody may be able to help me out I have a ICOM 706mk2g with no audio output on all bands it transmits fine it receives fine as well can anybody point me in the right direction to resolve this issue any help any pictures anything would help thank you
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Help icon ic 706mk2g no audio out

Post by ch25 »

First I would check micgain.
Than another microphone.
Than measure voltage between pins 7-1 and 5-6 in microphone socket.
Than apply audio to ACC1 pins 2-11

Come back with results.
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Re: Help icon ic 706mk2g no audio out

Post by 26zak »

From the original mic opened up
Pin 5 and 6 .036v
Pin 1 not connected
Acc1 pin2 and 11 .040v
Acc1 pin1 and 2 .002v
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Help icon ic 706mk2g no audio out

Post by ch25 »

Another microphone?
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Re: Help icon ic 706mk2g no audio out

Post by 26zak »

Now tested another two originals mic with no modulation ?
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Help icon ic 706mk2g no audio out

Post by ch25 »

What if you apply audio to ACC socket? Can be from PC soundcard, but PTT also must be from ACC
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Re: Help icon ic 706mk2g no audio out

Post by 26zak »

Add a mic to ACC1 pin 2 and pin 11 when I press the PTT to talk I can now hear voice what is the next step?
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Re: Help icon ic 706mk2g no audio out

Post by 26zak »

Voice on all band
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Help icon ic 706mk2g no audio out

Post by ch25 »

Did you check micgain setting in menu? It affect only mic socket.
Next step is to trace signal from microphone socket backwards.
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Re: Help icon ic 706mk2g no audio out

Post by 26zak »

Mic gain is set to 5 as default it doesn't make any difference whether I turn up or down
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Help icon ic 706mk2g no audio out

Post by ch25 »

Measure voltages on Q961
If OK apply some audio on base of Q961 and see if there is any output on TX
1.jpg
2.jpg
You do not have the required permissions to view the files attached to this post.
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
26zak
Regular
Regular
Posts: 18
Joined: 06 Aug 2012, 16:34

Re: Help icon ic 706mk2g no audio out

Post by 26zak »

Q961 top was 6.29v left was 4.52v and the right 3.86v
User avatar
ch25
Top Poster
Top Poster
Posts: 1673
Joined: 03 Dec 2016, 11:07
Call Sign: Lemmy
Location: Poland

Re: Help icon ic 706mk2g no audio out

Post by ch25 »

So apply some audio on it's base
WE ARE MOTÖRHEAD, AND WE PLAY ROCK N' ROLL
You can't have too many antennas...
Post Reply