So I take it the we are to assume an internal short circuit is the "fault"?
Then why didn't it show up during unit assembly or testing??
[However it could also be chaffing/fretting of wire to expose conductors in a longer timescale, but I find it hard to believe an ELT Tech working at a bench in the factory wouldn't spot this during assembly]
Last edited by glad rag; 21st Jul 2013 at 08:57.