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Old 01-23-2011, 08:04 PM   #1
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Lights flashing after replacing 2 fixtures on circuit


Hey I'm new to this site and am hoping there is an easy fix to my problem. I just replaced 2 flush mount ceiling fixtures in a hallway. They are both operated by the same switch. The old fixtures were working fine, but after installing these and turning the power back on they start blinking within 10 seconds. The fixtures had speed clips which I was able to use on one fixture, but had to cut off the other because there were two supply wires. Any thoughts??

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Old 01-23-2011, 08:14 PM   #2
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Lights flashing after replacing 2 fixtures on circuit


Try smaller bulbs--sounds like the thermal overload switch is kicking off.

When they blink off do they both go off at the same time?

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Old 01-23-2011, 08:23 PM   #3
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Lights flashing after replacing 2 fixtures on circuit


They both blink at the same time, almost like rapid fire flashing and it makes a faint noise that I can here both near the lights and in the basement be the electrical box. I have 60 watt compact florecents in them and the fixtures are rated to 75 watts.
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Old 01-23-2011, 08:55 PM   #4
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Lights flashing after replacing 2 fixtures on circuit


Shut the power off. Recheck all the connections. When I say recheck I mean take all connections apart and put them all back together.

If I had to guess....I bet you have a loose neutral wire in the light with the two feeds. But that is only a guess.

Are the noises like sparky type noises? Regardless don't go to bed tonite without leaving that switch OFF!!!! Loose neutrals = fire. Fire=bad
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Old 01-23-2011, 09:10 PM   #5
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Lights flashing after replacing 2 fixtures on circuit


I rechecked once, as described, I guess I'll have to go back and try again. grrr. I wouldn't say the noises sound like sparks... more like a clicking that is in sync with the flashing. I just wish I could narrow it down to one fixture, then I might have a better idea what was causing it. But I took each one down while leaving the other up to test and they both had the same problem.
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Old 01-23-2011, 09:47 PM   #6
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Lights flashing after replacing 2 fixtures on circuit


Try regular bulbs. Does the same thing happen? Is the switch by chance a dimmer?

Another thought here ... these fixtures may be wired wrong, with the thermal overload wired in parallel instead of series. How many leads were in each fixture, and how did you connect them?
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Old 01-23-2011, 10:10 PM   #7
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Lights flashing after replacing 2 fixtures on circuit


Clicking sounds like thermal overload.
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Old 01-23-2011, 11:40 PM   #8
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Lights flashing after replacing 2 fixtures on circuit


Quote:
Originally Posted by kbsparky View Post
Is the switch by chance a dimmer?
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Old 01-24-2011, 08:13 AM   #9
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Lights flashing after replacing 2 fixtures on circuit


Problem solved! I replaced the compact fluorescent bulbs with standard light bulbs and they are working like a charm. The lights are on a dimmer switch, so I guess what I've learned is that dimmers and compact fluorescents don't play well together.

Thanks for all the great (and propt replys)!
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Old 01-24-2011, 08:27 AM   #10
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Lights flashing after replacing 2 fixtures on circuit


Well now you know, call the neighbors, pull out the old disco records and have a party.

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