Rodent damage or diy etc a poss should have tripped the rcd though but could have pulled a wire out and cut the power as apposed to shorted and owner thought they all blew try them in a table lamp! IR test unless there christmas lights ! or if low voltage downlighters could be the tranny. just a thought.
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc