here something i learnt yesterday...if you take a tube out of a light fitting which has an electronic ballast 4 ft or 5 ft double fittings it goes into a fault safe mode and will not work until you switch off the power and switch it back on...or some have a time delay which could be a couple of hours.
how many of you have removed the ballast and returned it to be replaced because it is still new...without knowing about this fall safe mode?
i have brand new electrocnic ballasts on my workbench as we speak which have been removed because i didnt know about this...i changed the tube without switching off the power and the light stopped working so i replaced the ballast and then they worked so now i will test these new ballast to make sure they are actually faulty.
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