I have lots of T12 fluorescent fixtures in my garage and a few more in the house. Some are 4' and some are 8'. I have single, double and 4-tube fixtures. (nope, none with 3 :-) ) Some are bi-pin and some are one-pin on each end. (I think the former owner, an electrician, installed salvaged equipment.) Some of them don't seem to work. How do I trouble-shoot them when they don't light? Can a bad ballast take out lamps Prematurely? Do I bother trouble-shooting them or when they stop working, should I just install T8 ballasts and bulbs? OTOH, should I install a whole new fixture?
I hope to get some experienced points of view.