noisy ballest...Help

Discussion in 'Lighting' started by stikyWeedFinger, Mar 7, 2011.

  1. #1 stikyWeedFinger, Mar 7, 2011
    I have a switchable ballest brand new and I have it set to the Hps and the bulb is not pluged in and when I plug the ballest in it hums is that normal
     
  2. #2 Lay Low, Mar 7, 2011
    Yes. Magnetic ballasts make noise, digital ballasts are silent.
     

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