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Posted by RBM on September 21, 2009, 8:01 pm
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>I have a 4' Florescent fixture with 2 F40cw tubes.
> The tubes look like there half lit, sometimes they will fully light &
> other times there very low.
> I don't know if it is the fixture or tubes that are bad.
> I took 2 tubes out of another fixture that works properly & put them in
> the Fixture in question & they also lit very low.
> So next i put the questonable Tubes in the good fixture & they also lit
> very low in the good fixture.
> So i am back to the question which are bad or if the Tubes & fixture are
> both bad.
> --
> Dell Inspiron
> Pentium dual-core 2.2 GHz
> 2 GB DDR2 SDRAM
> Windows Vista Home Premium SP1
It could be that the bulbs in the fixture were damaged by a bad transformer,
which would also make sense that bulbs from another fixture don't work
either. My suggestion: If the fixture is in poor condition, replace it. If
the fixture is in good condition and you are electrically handy, get a new
electronic ballast transformer for 2-32 watt T-8 lamps. You'll need the new
lamps as well. This transformer will work much better than the magnetic one
currently in the fixture and the lamps will give more light than the old 34
watt T-12 lamps. The transformer does not wire the same as the one in the
fixture now, but it's actually much simpler to connect.
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> The tubes look like there half lit, sometimes they will fully light &
> other times there very low.
> I don't know if it is the fixture or tubes that are bad.
> I took 2 tubes out of another fixture that works properly & put them in
> the Fixture in question & they also lit very low.
> So next i put the questonable Tubes in the good fixture & they also lit
> very low in the good fixture.
> So i am back to the question which are bad or if the Tubes & fixture are
> both bad.
> --
> Dell Inspiron
> Pentium dual-core 2.2 GHz
> 2 GB DDR2 SDRAM
> Windows Vista Home Premium SP1