mvg26
Well-Known Member
i have a 400 watt HPS light that has been used for about 2 months now for flowering and today when i went to check on my babies my light wasnt on, the ballast seems to be making a louder than usual humming noise and the bulb is flickering but wont start up even after being turned off for half of an hour it is a 400 watt magnetic ballast with a regular 400watt bulb anyone with any ideas of the problem or how to fix it would be awsome and also anyone that has had this happen and can tell me what to do would be sweet thanks alot MVG