william_acker

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Oceanside
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So I bought a t5 fixture off someone from the forum. It's been up and running for about a month or two. And recently I noticed when it switches on there's list load hum that comes from the light.

It has different options to lighting. So it's a 4 light fixture. You can have actinics or the blue lights on. When I flip through the settings the hum shuts off when only 1 option is selected(actinics).

Any thoughts. Are the ballasts bad? Bulbs?
 

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