Help icon ic 706mk2g no audio out
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Help icon ic 706mk2g no audio out
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
- ch25
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Re: Help icon ic 706mk2g no audio out
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.
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.
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Re: Help icon ic 706mk2g no audio out
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
Pin 5 and 6 .036v
Pin 1 not connected
Acc1 pin2 and 11 .040v
Acc1 pin1 and 2 .002v
- ch25
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Re: Help icon ic 706mk2g no audio out
Another microphone?
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Re: Help icon ic 706mk2g no audio out
Now tested another two originals mic with no modulation ?
- ch25
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Re: Help icon ic 706mk2g no audio out
What if you apply audio to ACC socket? Can be from PC soundcard, but PTT also must be from ACC
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Re: Help icon ic 706mk2g no audio out
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?
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Re: Help icon ic 706mk2g no audio out
Voice on all band
- ch25
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Re: Help icon ic 706mk2g no audio out
Did you check micgain setting in menu? It affect only mic socket.
Next step is to trace signal from microphone socket backwards.
Next step is to trace signal from microphone socket backwards.
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Re: Help icon ic 706mk2g no audio out
Mic gain is set to 5 as default it doesn't make any difference whether I turn up or down
- ch25
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Re: Help icon ic 706mk2g no audio out
Measure voltages on Q961
If OK apply some audio on base of Q961 and see if there is any output on TX
If OK apply some audio on base of Q961 and see if there is any output on TX
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Re: Help icon ic 706mk2g no audio out
Q961 top was 6.29v left was 4.52v and the right 3.86v
- ch25
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Re: Help icon ic 706mk2g no audio out
So apply some audio on it's base
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