[1000mp] FT-1000MP Tx No Output

[gary skillicorn]

Thank you Morris, Vince, Bob, and Dan. I've been digesting all the ideas and suggestions. I guess I'm gearing up to do some disassembly and inspection armed only with a multi-meter. Everything seems so normal, Rx, PTT, Vc, Ic peaking 10-15 amps, function of the MOS, RF PWR & Mic Gain controls, modulation peaks on SSB, CW, and signal monitoring on a remote receiver; everything normal except no measurable RF output.
 
I keep wondering if I'm overlooking something stupid. There is something to be said about the simplicity of the old boat anchors and the warm red glow of vacuum tubes!   73's   Gary K3GS
                                                    ***

> On 6/11/2014 12:02 AM, gary skillicorn wrote:
> > Looking for some help from the FT-1000MP experts. I'm a new owner of an FT-1000MP but not new to amateur radio - first licensed 1960. I've identified my observations to help diagnose the problem .
> >
> > - in the middle of a SSB
> > QSO noticed the Po (power output) on the meter stopped
> > indicating
> >
> >
> > - no RF output showing on external SWR bridge with dummy load
> >
> > - receive is normal
> >
> > - on voice peaks the Ic (collector current) shows what I believe to be normal
> > high current indications
> >
> > - on a separate receiver I hear what I think is normal driver stage output
> >
> > - no RF output on CW either (showing significant but
> > probably normal Ic)
> >
> > - disabling auto ant tune with dummy load makes no difference
> >
> > - when the original outage occurred the cooling fan turned on
> >
> > -  switching between
> > antenna connectors A and B has no effect
> >
> >
> > -   a full reset
> > had no effeect  

> > I'm assuming a PA problem, but since Ic seems normal, it is
> > confusing. PA appears to be being driven yet no RF out. Anyone offer some ideas of the cause and possible solutions?  Thank you in advance.
> > 73's   Gary   K3GS
> >