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03-28-2006, 11:38 PM
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#1 (permalink)
| | Feather Star
Join Date: Mar 2006 Location: Denver, Colorado Age: 24
Posts: 765
  |  Has anyone else had this happen?
My 36" 2x96W PC fixture is a Jebo Odyssea brand. Well, I noticed today that the blue bulb had gone out. So after they shut off for the night and cooled down, I was about to take the bulb out (I already have a new one on the way). And for whatever reason, I clicked the lights back on, and the blue actinic came on a little, but only at the 2 ends. So I kept turning the lights on and off and each time the actinic bulb came on more and more...........what the hell? Is it shot? I wont really know until tomorrow when they come on again, but does this happen from time to time? It seems to still be working, but maybe not? I'm confused. My other single strip 96W PC has NEVER done this.....your thoughts?  _________ 125 Gal Reef. Born March 2002 FISH: Ocellaris Clown, Yellow - Powder Blue - and Hippo Tangs, Sand Star CORALS: Green Striped/Red/Purple Mushrooms, Green Star Polyps, Yellow Toadstool Leather, Bubble, Frogspawn, 2 Hammers, Yellow Polyps, Open Brain, Ridge Leather, Various Zoas, Button Polyps, Kenya Tree, Colt, Elephant Ear Mushroom, Clove Polyps, Torch, Purple Clam, 2 Rose BTAs  | 
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03-29-2006, 08:12 AM
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#2 (permalink)
| | Eyelash Blennie
Join Date: Sep 2004 Location: Lakeland, Fl
Posts: 1,294
  
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It is a fluorescent fixture. It works by running a high voltage through the gas in the bulb, ( oversimplified ) Yes I have seen this before. Change the bulb out and if it works you're good to go. If it continues to do this with the new bulb then the ballast is going bad or you may have a loose connection on one of the pins.
Remember, Always unplug the fixture before working on it. 
Jim
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90 Gallon glass, 135#'s of rock and 2" sand. 2-250w 20k XM metal halides. 2-95 watt actinic VHO, 4 powerheads, Coralife skimmer. Maroon Gold Striped Clown, Blue Chromis, Kole Tang, Pygmy Angel, Serpent Star, Brittle Star,Gorgonians, Mushrooms, Yellow Polyps, Turbo Snails & Blue Legged Hermits. 20 gal sump with Caulerpa, Mag 7 return pump. | |
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04-04-2006, 03:38 PM
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#3 (permalink)
| | Feather Star
Join Date: Mar 2006 Location: Denver, Colorado Age: 24
Posts: 765
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Ok a couple days ago my replacement bulb arrived and so far it is doing fine. However after reading some threads on here about cheap light fixtures I wonder if I should be worried. This is what I bought http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1
Thats in addition to the single PC strip I already had. What worries me about the new fixture is it humms when the lights are on, and it gets pretty loud sometimes. Is that the fans? It sounds like its coming from the middle of the fixture. Has anyone had a bad experience with this fixture? Or know someone who has? So far with the new bulbs I haven't had any problems.....but the humming is what worries me. | |
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04-05-2006, 03:31 AM
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#4 (permalink)
| | Eyelash Blennie
Join Date: Sep 2004 Location: Lakeland, Fl
Posts: 1,294
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The humming is probably coming from the ballast. Unfortunately there is nothing that I know of that you can do to fix it. It may have come loose from its mounting inside the fixture. If the noise was coming from the fans it would be obvious, ie.. out of balance or bearing failure. So, unless you are prepared to dissassemble your fixture, I would try and live with it.
Noise to you could mean, "I can't hear it." to me or it could mean, "Darn, that's the loudest fixture I've ever heard."
Happy to make things clear as mud. 
Jim | |
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