[ICOM] R-71A audio Problem

[David]

Hi Gary. Thanks for your answer. I was hoping that it might be something 
simple and not those blood trimmer caps. This is the first time the 71A has 
given me a problem in 26 years, even the back up battery still measures 3.6 
volts, so I guess I can't complain. I will work on it this coming fall when 
I have more time.
Again thanks for your help.

Dave  VA7DG
----- Original Message ----- 
From: "Gary P. Fiber" <gfiber at comcast.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, July 31, 2011 11:10 AM
Subject: Re: [ICOM] R-71A audio Problem


> The IC-R71A also has the very same VCO as many of the older Icoms have.
> Most generally distorted audio is caused by a faulty VCO trimmer cap.
> If you change out one do them all there are 4 VCO trimmer caps. You may
> get by checking and possibly doing a realignment on the R-71A's VCO
> section. if a cap is faulty it may not last long however.
>
> There could be other issues causing this too like a faulty power supply,
> bad BFO crystal, BFO crystal trimmer cap, voltage regulator etc.
>
> Gary K8IZ
>
>
> On 7/31/2011 10:54 AM, David wrote:
>> Greetings. My R71A works perfect except that it has developed distorted
>> audio and high back ground noise level. Before I delve into it, has 
>> anyone
>> else had this problem and what did you find.
>> Thanks for any help you can send my way.
>>
>> Dave   VA7DG
>>
>> ----
>> 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 with shipboard radar endorsement
> 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/
> To support QSL/QTH.net: http://www.qsl.net/donate.html