Heya.

Cheers for that - I fully intend to, but if I can save myself £80 for
someone to diagnose the fault and tell me its buggered, that'd be my
preferred option. I'm no electrician, and have no intention of
tinkering, but if I can find a model number inside (as I'm assuming
this is a 'generic' model) I can hopefully find a manual that'd tell me
exactly what that light means.

Cheers for the reply!