[Elecraft] K2 with no TX or RX help please

[radio at modesgate.com]

Hi Folks,

My K2/10 hasn't been used for a few months.  It was working fine last time
I used it.  I turned it on a few days ago with the intention of taking it
out portable and it's developed a problem.  The display and all the
controls seem to do what they usually do, in that frequency changes,
antennas switch, volume goes up and down, bands and modes change etc. but
it will neither transmit or receive.

I would be very greatful if someone could give me a heads up on where to
look first!  I built this quite a few years ago and my memory of it's
"internals" has faded considerably.

Many thanks and best wishes from Wales.

Denis MW0CBC / GW8OQV