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VHO Bulbs don't fire, what could be wrong?
Hi folks-
Some of you may remember me from about two weeks ago; I had problems with my MH bulbs popping the GFCI outlet on turn-on. That's all sorted out. It turns out that replacing the GFCI outlet solved the problem. Now I've got a different problem, that I noticed when I was working on the MH issue. Sometime recently, the 2 110W VHO bulbs stopped firing. I just get a dull orange glow near the ends of the tubes. Figuring these bulbs were just old, I got new ones from Hamilton Technology (supplier of the lighting hood), and swapped them out. The new ones don't light at all, though I get a brief flash when turning off the power. Tried combinations of old & new bulbs; no difference. The old ones glow orange, the new ones give nothing. I checked the connections; all is OK. The ballast is a standard magnetic variety (not an electronic one), and I believe it is (supposedly) instant start since there's no obvious starting capacitor in the circuit. Sounds to me like the ballast must be bad (it's six years old), but if anyone can suggest an alternative cause for what I'm seeing, I'd like to investigate that before plunking down $ for a new ballast. Marc |
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MAG wrote in news:MPG.1d83653238ea5b799896a9
@newsgroups.comcast.net: Now I've got a different problem, that I noticed when I was working on the MH issue. Sometime recently, the 2 110W VHO bulbs stopped firing. I just get a dull orange glow near the ends of the tubes. Sounds a little like what happens to us at work every time we turn the fish room lights on. Usually touching or rubbing the dull bulbs will coax them to come on though. Many of our balasts are no doubt pretty old too. |
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