My kitchen has generic under the cabinet fluorescent light fixtures. Each
fixture hold two eight watt fluorescent tubes. The lamps only last about 6
months although they are rated at 10,000 hours which is more than a year
continuous use. We only use them about 6 hours a day so they are failing
long before they should. My assumption is they are running too hot
shortening their life. House AC is fine not an overvoltage problem.
So, any of you have a recommendation for a fixture than works better, maybe
My first guess would also be the heat. It is more than one fixture or
just one. If just one I would look at the ballast as well. It could be a
problem. Also make sure you have the right lamps for that fixture.
If these are the lamps that came with the fixtures, I am not surprised that
they failed prematurely. Manufacturers usually supply cheap lamps. Replace
them with GE. Also frequent cycling of fluorescent lights will shorten
their life (Turning them on and off often). Another possibility is
vibration from the cabinets as a result of slamming doors and shuffling
Had this problem with single tube undercab plug in fixture. 2 burned out
within 6 months. Called the maker (GE). GE said this happens when
using GFCI outlet. Mine was plugged directly in GFCI. Don't know if
this would apply to upstream GFCI. Used non-GFCI & no problems for
three or more years now. HTH
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