Loud ballast

[J-man21]

I just bought a 400 watt HPS light kit that came with a S51 ballast. It makes a kinda loud buzzing noise when its on. Is this a normal soud or is there something wrong with the ballast?

 

[Ekoostik_Hookah]

i mean ya, mine have always made that buzzing noise.
Unless its super loud...its normal.

 

[Kupunakane]

Hey there J-man,
Check this out, maybe it will offer some kinda help for ya,
http://www.marijuanapassion.com/forum/showthread.php?t=9538

good luck dude
smoke in peace
KingKahuuna

 

[umbra]

it's referred to as transformer hum. perfectly normal

 

[J-man21]

cool, thnx for the info