I have a Ten Tec Model 538 Jupiter and a Model 963 power supply I bought new 
in2001.  I am running Firmware Version1.28. It is not connected to an 
amplifier. 
 I was in a CW QSO,not using the internal keyer,  when thetransmitter turned on 
continuously.  Thekey had no effect.  I pulled the key plug – no change. The 
mike was not connected.
I switched modes.  CW,FM, and AM – transmits continuously.  USBand LSB switches 
to transmit (“P” = 0);  no RF output. This is consistent on all bands.
I did a RESET several times. It showed a RESET and received WWV.  When I went 
to the CW mode it showed the same continuous transmit problem.  Behavior did 
not change after RESET.
Suggestions would be welcomed.
73
Mac
WQ8U
Hillsborough, NC
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