[Elecraft] Regarding K3 12v RCA rear socket - many thanks

[g4urt at btinternet.com]

To those who replied to my plea...
Many thanks for your input.
Delving further into the rig it seems that when you put an RCA plug into the socket it bends the centre tab down to complete a circuit and gives the 12v....having checked the volts etc there is 12v (fuse is fine) at the base of the RCA but putting a plug in doesn't fully complete the circuit hence no volts going out. That is the derivation of  'switched socket' on rear of rig....
Looks like some minor surgery (bending of tab) to be performed tomorrow!!!
Much obliged to all - you know who you are!!
Thanks, Peter G4URT