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Old 04-27-2011, 07:59 AM   #1
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flood light issues


hey everyone... when i moved to my house (first one) the flood light would only turn on for a few seconds. so i adjusted the settings and still didn't work right. so i put in a new one which worked well for about a month.

then the same thing started happening, it would only turn on for a few seconds or not at all. then the bulbs went out, and now its toast. i did notice that the back plate was a bit big for the new light so I put some outdoor caulking around 2/3 of the circled to help seal out some water, but hopefully allow it to vent. any ideas before i replace this one? should i test the voltage, could that have been my issue, or is water getting in there?

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Old 04-27-2011, 08:18 AM   #2
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flood light issues


Is this a motion sensor fixture? Why do you feel water could be getting in? Maybe the wall switch is bad or has a loose connection.

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Old 04-27-2011, 08:22 AM   #3
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Is this a motion sensor fixture? Why do you feel water could be getting in? Maybe the wall switch is bad or has a loose connection.
yea its a motion sensor floodlight... i dont know why the first one wasnt working correctly and the second one developed the exact same issue. being, the sensor stopped working right and the bulbs burning out prematurely. im lost on this one!
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Old 04-27-2011, 08:37 AM   #4
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Bulbs burn out prematurely from too much current. You should check the voltage at the fixture. You could have problems somewhere with the neutral connections.
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Old 04-27-2011, 08:45 AM   #5
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Bulbs burn out prematurely from too much current. You should check the voltage at the fixture. You could have problems somewhere with the neutral connections.
i am not electrician obviously... so would it be wise to hook up a multi-meter to check the voltage before calling a professional?
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Old 04-27-2011, 10:10 AM   #6
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yes you should check the voltage. What is the issue with the back plate being too big? Is this an outdoor round fixture box? The plate that the floodlights attach to should have a gasket installed and should match up with the box size.
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Old 04-27-2011, 10:21 AM   #7
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yes you should check the voltage. What is the issue with the back plate being too big? Is this an outdoor round fixture box? The plate that the floodlights attach to should have a gasket installed and should match up with the box size.
the box is flush with the house... there is backplate (wood, painted to match the house) that sits on the shingles and the light is mounted to that. the issue is the hole cut in the plate is too big for all motion lights i have found... so the gasket does not contact all edges, hence the caulking to true-up those edges.
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Old 04-27-2011, 01:05 PM   #8
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there is backplate (wood, painted to match the house) that sits on the shingles and the light is mounted to that
This is a vertical wall with shingle and not the roof, correct?
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Old 04-27-2011, 01:36 PM   #9
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flood light issues


your shingle comment is a real eye opener
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Old 04-27-2011, 05:03 PM   #10
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flood light issues


The quality of construction of these types of lights in usually very poor,
I have noticed even over here in australia that these types of lights dont
last very long.
Also double check the ratings to be sure you are not overloading the unit.
Look for a better quality unit.
If you are electronically minded, you could replace the triac with
a higher rated one, as it is usually the triac that goes faulty.
try using a 10 or 15 amp triac with a better heatsink.

Last edited by dmxtothemax; 04-27-2011 at 05:06 PM.
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Old 04-28-2011, 07:36 AM   #11
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This is a vertical wall with shingle and not the roof, correct?
yea this is a vertical wall, not on a roof.
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Old 04-28-2011, 06:29 PM   #12
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oh, ok

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