Liam,

You need to do the start-up mod if your board rev is 1 or 2 (number on lower right of board).  http://qrp-labs.com/qcx/qcxmods.html#pwrup

BTW, there are a number (4 at least that I recall) recommended mods for any PCB prior to rev 3.

Hope this helps (think it will).

73,

Robert, WA2T