[ICOM] IC 756 ProIII Tx problem

[Jaime Gomez]

I Just run the radio Connecting the dummy load to the power amplifier
output and the readings are the same, no output OR very low from 14 to 1.8,
ok from 18 to 29, the problem is not in the tuner
El nov 27, 2014 4:04 PM, "D C _Mac_ Macdonald" <k2gkk at hotmail.com> escribió:

> Wouldn't a way to check THAT problem be to run the rig WITHOUT using the
> tuner?
>
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * (Since 30 Nov 53) *
> * k2gkk hotmail com *
> * Oklahoma City, OK *
> * USAF & FAA (Ret.) *
> * * * * * * * * * * *
>
>
> > Date: Thu, 27 Nov 2014 15:51:36 -0500
> > From: cwdx.hk1n at gmail.com
> > To: icom at mailman.qth.net
> > Subject: Re: [ICOM] IC 756 ProIII Tx problem
> >
> > Hi Phil, thank you for your advice. I was out of home, sorry for the
> delay
> > in answering. I'll check those FETs as you suggest.
> >
> >
> >
> > On Wed, Nov 19, 2014 at 10:03 AM, Phil Krichbaum <vailphil at sopris.net>
> > wrote:
> >
> > > I've seen this happen to all bands and it is some FETS in the antenna
> > > tuner that get blown by ESD. Blowing dust is enough to blow these FETs
> on
> > > these Icoms. Never leave ant hooked to one of these rigs in a storm of
> any
> > > type and there is very poor protection of the RX.
> > >    Been there done that and paid the repair bill too!
> > >    Phil N0KE
> > >
> > > Jaime Gomez wrote:
> > >
> > >> I have an 756 ProIII that suddenly stopped transmitting on 1.8 to 14
> MHz.
> > >> On 18 to 28 MHz I have good Tx power, very low or nothing on 1.8 to
> 14.
> > >> Any idea where shall I look? The filter control voltages are ok.
> >>> --
> > 73,
> > Jim, HK1N
> >
> > President DXARC - DX Colombia Amateur Radio Club
> > *Malpe**lo Isl. HK0TU 1990 & H**K0NA 2012 Team Member/ hk0na.com
> > <http://hk0na.com/> *
> > Araucaria DX Group
>
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