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Harmony House Preheater Close-Up
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These are the lamps I had in the preheater than overheated and had a meltdown. Notice the darkening on the ends. there was only very faint darkening on the ends before the old fixture had failed. So it backs up the theories that the capacitor malfunctioned, overdriving the lamps a LOT and overheating the ballast coils in the process. The lamps still work though! This fixture is nice and bright. I love it! It's got a 0.85A Jefferson brick ballast.
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How loud is the ballast/starters?