[1000mp] FT-1000MP Tx No Output

[gary skillicorn]

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 effect    
 



 

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