New MH Bulbs and Ballast Question...

sov82

Member
Hi...I just got some new 10k 175watt blueline M/Hs. My ballast was not firing them at first and now occassionally fires them. Sometimes it works, sometimes it doesnt. If I turn off the ballast and try to turn it back on immediately, it never works. Do I have to wait a set period of time? Is there a break in period for M/H lights to fire each time? My ballast also hums slightly...but doesn't vibrate...is this normal?
Thanks,
Matt
 
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