OP
Its been on for around 5 to 6 hours constantly now so surely if was a problem it would have happened by now. Fingers crossed all ok going forward. Thanks a lot for your help today mate. Much appreciated.should be fine. thing is.if a spark had changed the light, he/she would have checked (with a meter) that the circuit had no faults. this is something that a DIYer could not do. however, it'sunlikelythat the circuit has a fault unless someone's been messing around.