[ICOM] Ic-781 problem

[Dr. William J. Schmidt, II]

That's my take too... just out of alignment.

Sincerely,

Dr. William J. Schmidt, II  K9HZ
Trustee of the North American QRO - Central Division Club - K9ZC

Email: bill at wjschmidt.com
WebPage: www.wjschmidt.com

"If computers get too powerful, we can organize them into a committee; that 
will do them in."  -- Bradley's Bromide


----- Original Message ----- 
From: "Adam Farson" <farson at shaw.ca>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, January 30, 2005 2:56 PM
Subject: RE: [ICOM] Ic-781 problem


> Hi Sam,
>
> This sounds as if the DDS is out of alignment, and is unlocking. Have you
> checked to see whether the problem occurs on both A and B VFO's?
>
> There is an alignment procedure in the service manual, but you will need 
> an
> extender kit to access the PLL boards. The service manual is downloadable 
> on
> http://www.qsl.net/icom/manuals.html You can check the error voltage with 
> an
> oscilloscope or a good DMM.
>
> Cheers for now, 73,
> Adam VA7OJ/AB4OJ
>
>
> -----Original Message-----
> From: icom-bounces at mailman.qth.net
> [mailto:icom-bounces at mailman.qth.net]On Behalf Of Sam Effinger
> Sent: Sunday, January 30, 2005 11:58
> To: icom at mailman.qth.net
> Subject: [ICOM] Ic-781 problem
>
>
> My IC-781 is dead on about the last 4 kc's of each band..There is 
> something
> like this described on the Icom repair page..
>
> I haven't really read all the available articles but wonder if anyone has
> had the same problem and can save me some time and effort in fixing the
> problem ??
>
>
> The name is different but it's something about adjusting the phase lock 
> loop
> ??
>
>
> I am gonna start on this problem next week and any help would be greatly
> appreciated...special test equipment needed ??
>
>
> Thanks as always...any and all input is  appreciated..
>
> I love this radio...
>
>
> Life is good..
>
>
> Sam
>
>
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> ----
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