[Elecraft] XV144 - power out with no drive

[Stewart GM4AFF]

I have an intermittent problem with my XV144 (driven by a K3). On transmit I
can see power output on the LEDs (3 greens) even when there is no audio
input and the transverter is getting quite hot. Stations tell me my signal
sounds fine with no background noise. So it's generating RF somewhere else!

 

Also, more seriously, occasionally, when I return to receive after
transmitting, the transverter LEDs all illuminate, I lose receive
sensitivity almost completely, although I can still barely hear louder
signals. The transverter won't transmit unless I switch off and on the K3
and the XV144. This occurs more often as the transverter heats up.

 

I can't tell whether the first problem relates to the second or vice versa.
The second problem was the first to occur and happened on a previous XV144 I
owned, so it's not just a one-off.

 

Any ideas or suggestions?

 

Thanks!

Stewart

GM4AFF