Fan Controller problem

[conoflex]

Just getting to final stages of my re-build everything in and working ok except my Lamptron FC6 controller,
It's working ok (fan speed goes up and down) but I have no display there is the led light across the top but no lcd display.
What could cause this one minute working next minute not and what can i do to it fix OR is it knackered and just buy a new one.

 

[conoflex]

Cheers, wasn't hopful when I posted to be honest.
Just tested it in my other rig lights come on but no one home
Weird is right and annoying, just ordered new one from here.