400w ballast went bang

stuboy892003

Well-Known Member
my 400w ballast went bang last night at 4 20 am. what would cause this? i opened it up and it appears one of the white cylinders which i think are capacitors went bang as the back is blown off and black. it was away from grow area and on a laminate floor. it was next to my bed:-( and shit me up as it was loud. it was on a timer with a gang relay
 
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