Maybe so but also have to think about the ballast as well sometime we get new ballast be sour { bad } some case if that luminaire do have electronic ballast some of them just can't take the surge at all and smoke it as well.

Is the luminare running 24/7 ? if so check the supply voltage at daytime and again at nitetime to see if there is a diffrence sometime it can do it.

Merci,Marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)