[TenTec] Jupiter problem - continuing saga

[J.D. MacAulay, WQ8U]

Feb 23rd WA8VSJ suggested I check the key socket and investigate the internal keyer.  I have not gotten inside the case yet - limited time.  
I did go to the menu.  The CW KEYER was turned to "OFF".  I switched it to "Mode A"; still continued RF output.   I switched it to "Mode B", still continued RF output.  Same results with the key plug inserted or removed.  I returned the switch to "OFF".
Using the menu I switched the TRANSMITTER  from "ON" to 'OFF'.  The RF output continued!!   I returned the switch to "ON". 
Using the menu I switched the KEYING LOOP from "OFF" to "ON". The transmitting stopped and the receiver was working as normal.  Put the key plug in; keying had no effect.
Hopefully I'll have time this weekend to get the case off.
Thanks & 73

Mac WQ8U Hillsborough, NC