[ICOM] IC-718 that dies on 30m, revives, dies again

[JACK]

Have you checked your antenna?  Could be a failing connection causing 
SWR shut down


At 07:20 AM 6/18/2010, you wrote:
>Hi John,
>
>Although I am not familiar with the IC-718, and based on the limited
>information provided, what you are describing may be an indication of PA
>oscillation. Hopefully someone familiar with the rig will have seen this
>before and can offer better help than I can.
>
>73, Frank W3UHF
>
>On Thu, Jun 17, 2010 at 11:11 PM, John Fuller <jwfuller at verizon.net> wrote:
> >
> > My IC-718, now two years old, worked fine when I put up a dipole and began
> > using it on 30 meters about a year ago. After a few months, however, it
> > developed an erratic pattern of dying, then coming back to life, then dying
> > again. At first it happened only rarely; today, it happens two-thirds of
> > the time.
> >
> > The dipole is cut for a very low SWR. When the transceiver works, it shows
> > 1:1 SWR and maximum power output. Then, all of a sudden, the power drops to
> > nothing or almost nothing. Then it returns but the signal freezes into a
> > constant carrier as I continue to send code. The SWR jumps all the way to
> > the right side of the meter.
> >
> > Sometimes turning off the transceiver or changing bands several times
> > restores normal operation. Most of the time it doesn't, however.
> >
> > Before I go to the trouble and expense of shipping this rig to Icom for
> > repair, does anyone have experience with this problem or a suggestion for
> > curing it?
> >
> > John Fuller
> >K4HQK
> >> Alexandria, Va.
> >