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Fluorescent tube problems
I have 8', Sylvania T12, 75W tubes (2 each) in my shop fixtures. The
other day one of the tubes quit working. I replaced it with a used spare I had and it worked but appeared to not be as bright as a new tube would be. Today I bought a box of new tubes that are exact duplicates of what I had http://www.menards.com/main/electric...33660800703824 http://tinyurl.com/oswn9a7 and replaced both of the above tubes with new tubes. Neither new tube would start properly, they flickered and hummed and would only produce about 1/2 of the expected light output. I moved the new tubes to another fixture and had the same results. I replaced one new tube with a used tube and the used tube worked fine and the new tube still flickered and hummed and produced 1/2 the expected light. The results were the same in a third fixture. All in all I tried variations with six of the new tubes and none worked properly. I don't have any spare ballasts to test for a dying ballast. I'm not sure how old the ballasts are, maybe 10 years old. Could the ballasts be the culprit or did I get a box of bad tubes? |
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