"Martin McCormick" wrote in message
...
In article ,
Sam Goldwasser wrote:
First check for continuity of the filaments. Often, the open and that's
a simple test!

Yup. Open filaments are a show stopper all right.



Not always, I have some electronic ballasts that can fire up a tube with an
open cathode just fine. I used one in the ozonator in my hot tub to squeeze
more life out of a $60(!) bulb that had both cathodes blown open when the
original choke shorted.