humming noise

[kjamaya]

Got this annoying humming noise coming from my fixture when the whites come on. I normally have to smack it a couple of times in order for it to shut up.

Anyone knows why?

[trockafella]

Possibly a fan.... What kind of fixture is it.? Where exactly does the noise sound like it comes from.?

[flooddc]

Possibly a fan.... What kind of fixture is it.? Where exactly does the noise sound like it comes from.?

+1

Could be the ballast also! T5?

[kjamaya]

72" current usa t5. Noise comes I believe from the middle of the fixture. Its def not the fan.

[kjamaya]

Wondering if I need to replace my ballast... will this stop the humming noise?

[flooddc]

Oh! check the light bulbs too. If it the ballasts it wouldn't be cost effective t replace it. Time for LED !

[kjamaya]

Oh! check the light bulbs too. If it the ballasts it wouldn't be cost effective t replace it. Time for LED !

 

Bulbs are all new, as for ballast I have one brand new already and there are several people that sell them at great prices. I'm not sold yet on leds as I used to have them over my 75 and hated the disco ball look as well as my corals didn't do to well. But that's a whole other thread there. Just trying to figure out what the humming may be. Like I said it goes away whenever I hit the middle of my fixture...

[flooddc]

All ballast hums (harmonic), but newer electronic ones are pretty quiet.

maybe loose ballast (since humming goes away). Try tighten the screw(s) before you replace it. Good luck

[Steve175]

I too would take it down, open it, and tighten all the screws down: suspect something is loose.

[kjamaya]

Ok I'll have my husband go at it. Thanks every1

[swimmatte]

The fact that it does away when you hit it really sounds like something is loose.

[treesprite]

My fixture was making a bunch of noise, so I put some foam under the legs and that stopped the problem completely.