[ICOM] IC-2100 audio

[GGLL]

	Where the three lines radiating from the pad enter the can, that's 
where the poor contact happens. So pressing the AL case onto the track, 
do the trick.

That particular image shows an ECM with three tracks (I guess to avoid 
the problem), but many have only one track.

Another culprit could be a surface mount electrolytic in the audio path.

Good luck
Guillermo - LU5WE.

El 26/04/15 a las 10:30, Mike Reublin NF4L escibió:
> Do you mean the three lines that radiate from the solder pad to the
> can of the mic? Short of removing the mic from the board, I don't
> understand how you would inspect/remedy anything. I'm unwilling to
> take the mic off the board.
>
> 73, Mike NF4L
>
>> On Apr 26, 2015, at 9:04 AM, GGLL <nagato at madryndigital.com.ar>
>> wrote:
>>
>> Take a look at:
>>
>>> http://www.okokchina.com/Files/uppic/Electret%20Condenser%20Microphone755.jpg
>>
>>
>>>
you'll see, despite the terminals could be wire or pad for soldering, 
one terminal is connected to the AL case, but it is a mechanical contact 
and I've seen many failing due to poor contact.
>> Sometimes i've solved the problem pressing the case to the track
>> with a needle or thin solid wire.
>>
>> Regards Guillermo - LU5WE.
>>
>> El 25/04/15 a las 21:04, Mike Reublin NF4L escibió:
>>> Guillermo -
>>>
>>> I opened the mic and I don't see anything that looks like a
>>> ground ring, just the 2 pins soldered on the back side of the
>>> board. The solder joints look good. It's an HM-133S mic.
>>>
>>> 73, Mike NF4L
>>>
>>>> On Apr 25, 2015, at 7:15 PM, GGLL
>>>> <nagato at madryndigital.com.ar> wrote:
>>>>
>>>> Electret Condenser Mike, check the ground ring at the mike
>>>> cartridge itself.
>>>>
>>>> Regards Guillermo - LU5WE.
>>>>
>>>> El 25/04/15 a las 16:57, Mike Reublin NF4L escibió:
>>>>> What is an ECM?
>>>>>
>>>>> Mike NF4L
>>>>>
>>>>>> On Apr 25, 2015, at 2:11 PM, GGLL
>>>>>> <nagato at madryndigital.com.ar> wrote:
>>>>>>
>>>>>> Certainly. Could be also a problem with the ground ring in
>>>>>> the ECM element.
>>>>>>
>>>>>> Regards Guillermo - LU5WE.
>>>>>>
>>>>>> El 25/04/15 a las 13:51, Mike Reublin NF4L escibió:
>>>>>>> The IC-2100 is my desktop rig, never been mobile. I get
>>>>>>> frequent reports of broken crackly audio that sounds like
>>>>>>> an intermittent mic cord. I've put the cord in a tester
>>>>>>> and wiggled and pulled it, with no indication of fault.
>>>>>>> Anybody have any hints or kinky about solving this?
>>>>>>>
>>>>>>> Is there a possibility of a problem with the jacks in the
>>>>>>> mic or the rig?
>>>>>>>
>>>>>>> 73, Mike NF4L
>>>>>>>
>>>>>>> ---- 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
>>>
>>> ---- 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
>
>