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Old 05-06-2009, 02:36 PM
 
Location: Visitation between Wal-Mart & Home Depot
8,308 posts, read 34,907,180 times
Reputation: 7107

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Here's another one...

I don't necessarily already have the answer, but maybe...

I have a flourescent light fixture in my garage. In late 2007 this fixture was moved from an area inside the house. On the advice of my electrician, the ballast was replaced. It accepts somewhat unusual U-shaped bulbs. About a week ago the functionality diminished markedly. Neither of the bulbs wants to achieve full intensity; instead they hover at what appears to be about the halfway point. I can see a "pattern" in the bulbs, you might call it "myelinization" if your brain works similarly to mine. They started doing this at the same time. There is an audible crackle from the switch from time-to-time at start up. What's the deal?
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Old 05-06-2009, 06:28 PM
 
Location: sowf jawja
1,940 posts, read 8,316,860 times
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does your fixture have a starter? if so, replace that. if not, try a new bulb. if it still happens, replace the ballast.

different problems can give you the same result.
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Old 05-06-2009, 06:50 PM
 
Location: West Michigan
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Second Southgeorgia's suggestions. First thing that popped into my head was Ballast, but very well could be a bad tube.
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Old 05-07-2009, 07:38 AM
 
Location: Visitation between Wal-Mart & Home Depot
8,308 posts, read 34,907,180 times
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Quote:
Originally Posted by Bydand View Post
Second Southgeorgia's suggestions. First thing that popped into my head was Ballast, but very well could be a bad tube.
I was thinking that I needed a new ballast since both of the bulbs manifested the same symptoms at the same time. It seemed pretty silly to not try replacing the bulbs first, had to go to a lightbulb specialty store and they had to order them. I'll let you know how it goes. No starter, by the way.
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Old 11-16-2009, 06:29 PM
 
1 posts, read 1,868 times
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i'm having a problem with a two fixtures in a single light cabinet as the bulbs also do not turn on all of the way. However, if you even lightly touch one of the bulbs in each fixture they light up all of the way. There's got to be something easy here..??... Any ideas?
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Old 11-16-2009, 10:21 PM
 
Location: West Michigan
12,083 posts, read 34,634,971 times
Reputation: 16872
Quote:
Originally Posted by ranger303 View Post
i'm having a problem with a two fixtures in a single light cabinet as the bulbs also do not turn on all of the way. However, if you even lightly touch one of the bulbs in each fixture they light up all of the way. There's got to be something easy here..??... Any ideas?
Sounds like they are not seated all the way in the sockets, or you have a bad socket.
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Old 11-17-2009, 08:32 AM
 
Location: Visitation between Wal-Mart & Home Depot
8,308 posts, read 34,907,180 times
Reputation: 7107
Never did give an update. Replacing the tubes fixed the problem. It was counterintuitive to me that the tubes could both have the exact same problem at exactly the same time, but evidently flourescent tubes mate for life.
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Old 11-17-2009, 08:58 AM
 
Location: sowf jawja
1,940 posts, read 8,316,860 times
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Quote:
Originally Posted by jimboburnsy View Post
Never did give an update. Replacing the tubes fixed the problem. It was counterintuitive to me that the tubes could both have the exact same problem at exactly the same time, but evidently flourescent tubes mate for life.
could've only been one bad lamp, but the ballast was built to drive two lamps, and without one, nothing works.
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Old 11-17-2009, 09:19 AM
 
Location: Visitation between Wal-Mart & Home Depot
8,308 posts, read 34,907,180 times
Reputation: 7107
Quote:
Originally Posted by southgeorgia View Post
could've only been one bad lamp, but the ballast was built to drive two lamps, and without one, nothing works.
Aaaaah... I think a lightbulb just lit up...
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Old 11-18-2009, 06:00 PM
 
Location: The Circle City. Sometimes NE of Bagdad.
19,207 posts, read 20,026,438 times
Reputation: 49774
It has been my experience that it's best to replace both bulbs/tubes in the fixture at the same time.
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