This is my 150w DE MH bulb. I'm not sure if its blown or if the ballast is toast. Ballasts are only 2 years old. I'm leaning towards a blown bulb with the dark spot. Please advise.
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Isn't a MH bulb lit with gas that's within the bulb?Do you have a multimeter? If yes use the continuity setting
Isn't a MH bulb lit with gas that's within the bulb?