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Evidently tubes have the ion emitter at one end only (the cold spot) and if its at the top convection currents overheat it. Should work if the label is at the bottom where the cold spot is.

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12y ago

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How does 4 tube fluorescent work?

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Fluorescent lights may not come on fully due to issues with the starter, ballast, or tubes. To address this, you can try replacing the starter or ballast to see if that resolves the problem. If the issue persists, it may be necessary to replace the tubes as well.


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