Jimster
Supporter
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I recently decided to try a 10000K Ultra Sun 1000W bulb. It has a ton of blue in it and I'm using it with the same ballasts that I've used for 30 years or more. The problem I'm getting is a somewhat metallic sounding buzz coming from the ballast. The bulb is working great and the ballast has worked with a dozen different types of bulbs, but this one has the strange buzz to it. I've used a MH to HPS conversion bulb in the same ballasts without any issues, ad heard the same type of noise but only when first starting. It's more of a nasal tone to it's regular hum/buzz. There isn't much to go bad in a magnetic, old school ballast other than the starting cap...which starts up fine. Am I missing something, worrying about nothing, or is my ballast getting ready to take a nap? Other bulbs work fine with normal noise, it's just this one bulb.
Any ideas or comments?
Any ideas or comments?