[ICOM] IC-746Pro Audio/Receiver Cut Out Issue

[Kelly Taylor]

Except audio wasn’t the only thing cutting out.

> On Nov 16, 2016, at 9:59 AM, Bill <bmarx at bellsouth.net> wrote:
> 
> Takes about 3 seconds to check the speaker connection, the T/R relay takes a bit longer.
> Bill
> 
> 
> 
> On 11/16/2016 10:10 AM, Kelly Taylor wrote:
>> Seems the T/R relay is a better culprit to check: doubtful a bad speaker connection would cause signal loss, as described the the OP.
>> 
>> 73, kelly, ve4xt,
>> 
>>> On Nov 16, 2016, at 8:29 AM, Bill <bmarx at bellsouth.net> wrote:
>>> 
>>> I had a similar problem and it turned out to be a bad connector to the external speaker. Are you using the internal or and external speaker?
>>> Bill
>>> 
>>> On 11/15/2016 10:15 PM, Mark K3MSB wrote:
>>>> Hello All
>>>> 
>>>> Our club's 746Pro is having an issue.   The following was written by one of
>>>> our members:
>>>> 
>>>> "I had problems with the Icom-746PRO again this past weekend during the WAE
>>>> RTTY contest.   The radio and station worked flawlessly for a couple of
>>>> hours and then the audio suddenly started dropping out (as described at the
>>>> last meeting).
>>>> 
>>>> I checked all radio settings and disabled anything (i.e. NB, squelch, etc)
>>>> that could potentially cause the receive to cut/drop out.   Nothing made a
>>>> difference.
>>>> 
>>>> I made a couple of video recordings which I posted on the club's  website
>>>> <http://www.qsl.net/w3zgd/>.  Click on the "Links" tab (bottom of the left
>>>> panel) and scroll to the bottom of the page.  There are two recordings, 9Mb
>>>> and 14Mb, which will likely take a couple minutes to download to your
>>>> computer.   You probably only need to download one of the files to get a
>>>> idea of what is going on.
>>>> 
>>>> Both videos begin with no sound after the radio cut out while monitoring a
>>>> S9+ signal from Europe.   In each recording, I pressed the PTT
>>>> button on/off to switch the radio from RX to TX and back which seems to
>>>> consistently bring the receive back -- sometimes for a few seconds (as in
>>>> these recordings) and other times for a few minutes.   While the audio
>>>> level in the video is not great, you can see the strong signal strength on
>>>> the meter which lasts for a couple of seconds and then fades out.    The
>>>> fade out is not from the station stopping their transmission -- it's simply
>>>> the radio receive fading to zero on its own."
>>>> 
>>>> Comments welcome
>>>> 
>>>> 73 Mark K3MSB
>>>> ----
>>>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>>>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>>>> Icom FAQ: http://www.qsl.net/icom/
>>>> To support QSL/QTH.net: http://www.qsl.net/donate.html
>>>> 
>>> ----
>>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>>> Icom FAQ: http://www.qsl.net/icom/
>>> To support QSL/QTH.net: http://www.qsl.net/donate.html
>> ----
>> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>> Icom FAQ: http://www.qsl.net/icom/
>> To support QSL/QTH.net: http://www.qsl.net/donate.html
>> 
> 
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> To support QSL/QTH.net: http://www.qsl.net/donate.html