[Elecraft] XV144 problem - no LEDs light up

[john petters]

Greetings Folks,
I've just resurrected my XV144 after a year of none use. I needed to 
make up a new cable for the K2 to the XV. Everyting seems norml except 
that the LEDs are not lighting on transmit. As the relays operate, one 
bar flicks on and then goes off. I am getting about 15 watts output and 
it is receiving OK. I've checked the wiring on the main connector. The 
K2 is set to trn2 and is reading the correct frequency on 144mhz. Have I 
missed or forgotten something obvious?
Many thansk in anticipation.

73 John G3YPZ