[ICOM] IC 765 Ant Tuner Problem

[Nathan Moreschi]

Thanks Dave - that fixed it!

Nate/N4YDU
----- Original Message ----- 
From: "Dave K6DLW" <k6dlw at charter.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, March 16, 2008 8:46 PM
Subject: Re: [ICOM] IC 765 Ant Tuner Problem


>
>
> Knowledge Base Article 5BBA692A36 IssueThe tuner on my 765 does not tune 
> on
> any band. Inspection reveals that only one motor is turning.ResolutionThe
> motor gear assembly is jammed at one end of its tuning range. This failure
> is usually caused by an attempt to tune an excessively high-SWR load. To
> fix: Disconnect J6 connector on tuner unit and momentarily apply a DC
> voltage (around 15 volts) to the stuck motor to un-jam it. Reverse the
> polarity of the voltage to the motor if it doesn't unstick the first time.
> Reconnect J6 connector and test the tuner. It should now work fine. If it
> does not, the motor driver chip (IC2) has probably failed. CategoryAmateur 
> :
> HF : 765   Search Knowledge Base
>
>
> ----- Original Message ----- 
> From: "Nathan Moreschi" <n4ydu at nc.rr.com>
> To: "ICOM Reflector" <icom at mailman.qth.net>
> Sent: Sunday, March 16, 2008 7:49 AM
> Subject: [ICOM] IC 765 Ant Tuner Problem
>
>
> For some unknown reason, the automatic antenna tunner in my IC 765 has
> stopped functioning. When the tuner is engaged, the red light stays on and
> does not turn off (the green light is on as well). The tuner does not make
> an attempt to tune either. Could this be a relay?
>
> Any ideas?
>
> 73,
>
> Nate/N4YDU
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> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
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