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I have a client who asked me, at the end of a job, if I could check out a why two sets of fluorescents seem to burn out bulbs prematurely and occasionally not operate and other times work again. one is a pair of cans with CF floods, the other is a pair of little undercounter lights with mini 1' tubes. I know enough to wire things properly but I'm not sure how to approach troubleshooting something like this.
they're both on the same circuit. opened the switch box that they are operated out of to see if there might be a loose connection. nothing obvious. I haven't traced the run but it may well be accessible in the basement.
could a loose connection cause premature death in fluorescents? any other thoughts? I'd like to fix it if I can and save her the hassle of trying to get an electrician in for what seems like a pretty small job ...