[ICOM] IC 725 Won't Transmit

[Gary P. Fiber]

Lee,

I was thinking LPL Loop is out of adjustment but generally that shows up 
as dead spots about every 10 KHz or so.
Maybe the mic has gone bad. AM carrier will be easy to try, CW too once 
you install a key. Do you have current meters on your power supply? If 
so whats the current reading when you transmit in CW when you get to it.

I had a similar thing happen to me years ago with my then IC-730. Turned 
out to be a bad antenna feedline. I would be talking along and the SWR 
would raise to the point people were asking where I went. Took a bit to 
figure it out about the SWR. Then I was living in Ohio, went up the 
tower at about 10:00 PM in a small snow storm to change out some faulty 
coaxial cable.

I looked on Icom's web page to see if there was any mention of your 
trouble in the knowledge base and there was only the instruction manual 
under the IC-725.

Gary K8IZ

Lee Mairs (SAG) wrote:
> Gary -
> No dead spots that I noticed, TX light comes on.  Don't know about AM 
> or CW.  I will have to get the radio down from the shelf and try it 
> out.  It took me awhile to even recognize that the problem was with 
> the radio and not the antenna system.
>
> Very subtle failure - all of a sudden nobody was hearing me...
> 73 de Lee
> KM4YY/8
>
>
> Gary Fiber wrote:
>> Lee,
>>
>> Any other symptoms like dead spots in the receive while tuning the 
>> main dial? Does the TX light illuminate when you press the PTT? Will 
>> it transmit in AM, CW ?
>>
>> Gary K8IZ
>>
>> At 06:26 AM 10/17/2007, you wrote:
>>> My IC 725 started out to intermittently refuse to transmit.  I could 
>>> fix the problem by cycling the power off and then back on after a 
>>> few seconds.  I wasted a good six months convinced that the problem 
>>> was in the Tarheel antenna system in my mobile, but after lending 
>>> the radio to a friend discovered that the problem was independent of 
>>> being mobile.
>>>
>>> The radio now is virtually unusable as the period between 
>>> intermittent  failures is only a few minutes.
>>>
>>> Any clues out there?
>>>
>>> 73 de Lee
>>> KM4YY/8
>>> ----
>>> 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/
>>>
>>>
>>> -- 
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>>
>> Gary Fiber K8IZ
>> GROL PG-19-6691
>> Washington State Resident
>>
>>
>> ----
>> 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/
>>
> ----
> 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/
>