[Elecraft] K3 IO1 Error Message

[Chris G3SJJ]

When I switched on my K3 on Saturday afternoon prior to using it in 
Field Day it came up with IO1 error message. I will contact technical 
support but wondered if anyone had experienced this before.

Associated symptoms are: Doesn't recognise Sub Rx, ATU or 100w PA, ie 
max output is 12w.

It was working perfectly in the week and I am thinking a connector may 
have worked lose in transit. Accessing the Field Day site involved a 
drive along bumpy farm tracks and a steep grassy incline which my 4x4 
SUV coped with OK but apparently not the K3!!

Chris G3SJJ