What would cause a brand new fluorescent tube bulb to develop a large dark spot on the end and show signs of failing only one day after installing it? It's dim and
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Why do fluorescent light have black ends? - Quora
Why do fluorescent light have black ends? - Quora
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Why do fluorescent light have black ends? - Quora
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Why do fluorescent light have black ends? - Quora
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The Blaby Blog: Advice, Information & Top Tips on Electrics & Alarms in Leicester : Why do Fluorescent Tubes Turn Black at the Ends?
