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#1
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electrical help! light fixture doesn't work--tester says itdoes!
Hi,
The center tab(the contact) has collapsed maybe? Not making contact to the bulb. Pry them up after turning off breaker feeding the fixture. Tony Sarah wrote: I have a light fixture in a closet that just stopped working. Replaced all 3 bulbs (have also tested the 'old' ones, and they all still worked anyway). Have tested each of the bulb 'sockets' with one of those power testers, and all 3 'sockets' show that the light fixture is getting electricity, but when I put bulbs in, they don't light. I know the bulbs work, I tried them in a lamp. If you turn the light switch on and off, nothing happens, but the power tester thing will light up/make noise when the switch is in the on position when each of the sockets are being tested. Make sense to anyone?!?!?! Help I can't see anything in my daughters closet! Thanks!! Sarah |
#2
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electrical help! light fixture doesn't work--tester says it does!
Sometimes (after turning OFF the circuit breaker to the light in question), I have to take a small knife or other sharp object, and "scratch clean" the center tab contact, so that it is shiny metal again, and makes good contact. After that, my bulbs always work !! Good Luck !! --James-- |
#3
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electrical help! light fixture doesn't work--tester says it does!
Sarah wrote:
I have a light fixture in a closet that just stopped working. Replaced all 3 bulbs (have also tested the 'old' ones, and they all still worked anyway). Have tested each of the bulb 'sockets' with one of those power testers, and all 3 'sockets' show that the light fixture is getting electricity, but when I put bulbs in, they don't light. I know the bulbs work, I tried them in a lamp. If you turn the light switch on and off, nothing happens, but the power tester thing will light up/make noise when the switch is in the on position when each of the sockets are being tested. Make sense to anyone?!?!?! Help I can't see anything in my daughters closet! Thanks!! Sarah It is extremely unlikely that all three sockets suddenly deformed enough so that light bulbs won't connect to their contacts properly. Most likely your "tester" is responding to a miniscule amount of current coupled to it via interwire capacitance. But, that path will not support enough current to light any kind of incandescent bulb. You have an open circuit somewhere between your breaker panel (or fusebox) and the light fixture. Since the switch is probably near the fixture, and you tell us that it has to be turned on to make the "tester" lightup/make noise, this tells me that the open circuit is most likely in the neutral lead, and probably a fair distance from the fixture. I'm afraid you're goiung to have to get a professional, or at least someone quite familiar with these sorts of problems in building wiring, to find and fix the problem for you. Good luck, and let us know what it turns out to be, Jeff -- Jeff Wisnia (W1BSV + Brass Rat '57 EE) "If you can keep smiling when things go wrong, you've thought of someone to place the blame on." |
#4
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electrical help! light fixture doesn't work--tester says itdoes!
Sarah wrote:
Help I can't see anything in my daughters closet! Thanks!! Sarah Some would term this a "feature" rather than a "bug". |
#5
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electrical help! light fixture doesn't work--tester says it does!
It is extremely unlikely that all three sockets suddenly deformed enough so that light bulbs won't connect to their contacts properly. Most likely your "tester" is responding to a miniscule amount of current coupled to it via interwire capacitance. But, that path will not support enough current to light any kind of incandescent bulb. You have an open circuit somewhere between your breaker panel (or fusebox) and the light fixture. Since the switch is probably near the fixture, and you tell us that it has to be turned on to make the "tester" lightup/make noise, this tells me that the open circuit is most likely in the neutral lead, and probably a fair distance from the fixture. I'm afraid you're goiung to have to get a professional, or at least someone quite familiar with these sorts of problems in building wiring, to find and fix the problem for you. Good luck, and let us know what it turns out to be, Jeff This is weird...have exactly the same problem and discussed it with an electrician friend of mine earlier tonight. He gave me the exact same answer you did. I had to check to make sure I hadn't written the original post. Tom. |
#6
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electrical help! light fixture doesn't work--tester says it does!
Try getting a new fixture and see if it works. If it does, it's not the
house wiring. If it doesn't you can always return it. Bonnie in NJ "Sarah" wrote in message m... I have a light fixture in a closet that just stopped working. Replaced all 3 bulbs (have also tested the 'old' ones, and they all still worked anyway). Have tested each of the bulb 'sockets' with one of those power testers, and all 3 'sockets' show that the light fixture is getting electricity, but when I put bulbs in, they don't light. I know the bulbs work, I tried them in a lamp. If you turn the light switch on and off, nothing happens, but the power tester thing will light up/make noise when the switch is in the on position when each of the sockets are being tested. Make sense to anyone?!?!?! Help I can't see anything in my daughters closet! Thanks!! Sarah |
#7
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electrical help! light fixture doesn't work--tester says it does!
As a professional electrician my first step would be to open up the switch
to check for a loose connection, broken wire, loose splice, or worn out switch. My next step would be to remove the light fixture and put a rubber pigtail socket with a bulb in its place. If the pigtail light works, the fixture would be examined for broken or burnt off wires. If the pigtail light doesn't work, my next step would be to open up the main electrical panel and check for loose connections on the circuit breakers and the neutral bar. If I don't find anything there, I would start to play detective and look for suspect junction boxes that may contain the feed for the light. If I still didn't find the problem, we would have a discussion about what to do next. I could start cutting holes in walls or try to refeed the closet light from another source. I would be interested in how the light was behaving prior to the failure. Did it ever flicker or go on or off intermittently on its own? Did anyone do any construction or hang a painting or anything else in the area of the closet that may have triggered the failure? Those induction power testers only sense the hot conductor. If your neutral conductor is loose or not connected the fixture will not light, but the induction tester will say that there is juice there. Based on your preliminary findings it's possible that your neutral conductor is the problem. Good luck, John Grabowski http://www.mrelectrician.tv "Sarah" wrote in message m... I have a light fixture in a closet that just stopped working. Replaced all 3 bulbs (have also tested the 'old' ones, and they all still worked anyway). Have tested each of the bulb 'sockets' with one of those power testers, and all 3 'sockets' show that the light fixture is getting electricity, but when I put bulbs in, they don't light. I know the bulbs work, I tried them in a lamp. If you turn the light switch on and off, nothing happens, but the power tester thing will light up/make noise when the switch is in the on position when each of the sockets are being tested. Make sense to anyone?!?!?! Help I can't see anything in my daughters closet! Thanks!! Sarah |
#8
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electrical help! light fixture doesn't work--tester says it does!
Tom wrote:
snipped Since the switch is probably near the fixture, and you tell us that it has to be turned on to make the "tester" lightup/make noise, this tells me that the open circuit is most likely in the neutral lead, and probably a fair distance from the fixture. I'm afraid you're goiung to have to get a professional, or at least someone quite familiar with these sorts of problems in building wiring, to find and fix the problem for you. Good luck, and let us know what it turns out to be, Jeff This is weird...have exactly the same problem and discussed it with an electrician friend of mine earlier tonight. He gave me the exact same answer you did. I had to check to make sure I hadn't written the original post. Tom. As they used to say about Laurel and Hardy..... "Two minds without a single thought" Jeff -- Jeff Wisnia (W1BSV + Brass Rat '57 EE) "If you can keep smiling when things go wrong, you've thought of someone to place the blame on." |
#9
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electrical help! light fixture doesn't work--tester says it does!
That would prove it, but hell stay at home and temp. wire a table lamp to
it. Or one of those pig tail sockets for a 110 volt bulb. Tony D. "BonnieJean" wrote in message ... Try getting a new fixture and see if it works. If it does, it's not the house wiring. If it doesn't you can always return it. snip |
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