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Gatekeeper777
01-05-2013, 05:13 PM
I just got a standard Magnetic 400 watt HPS. There is a small hum. Is it suppose to hum or is the ballast damaged?
Thanks
Dutch Pimp
01-05-2013, 11:30 PM
Most magnetic ballasts hum/buzz, some amount. It means their happy!
Gatekeeper777
01-06-2013, 04:42 PM
Most magnetic ballasts hum/buzz, some amount. It means their happy!

Thanks for your reply. I always used a CFL bank until now.:pimp::thumbsup: