So, ive been running a Hydrofarm 400W convertible ballast light system for almost a year now, and i check on my girls today and find them in total darkness. Since the light from the power switch on the ballast was still on, i assumed my MH bulb burned out, but after i switched bulbs the HPS bulb didnt work either. So apparently something is wrong with my ballast. I bought this brand new, its run almost a year with no problems, and today its done. Is this common? I would assume most ballasts are supposed to last far longer than a year. Also, is their anything i can do to fix it? The light on the power switch is still on, so the ballast is recieving power, what could the problem be?

Any advice would be appreciated.
flow Reviewed by flow on . Ballast problems So, ive been running a Hydrofarm 400W convertible ballast light system for almost a year now, and i check on my girls today and find them in total darkness. Since the light from the power switch on the ballast was still on, i assumed my MH bulb burned out, but after i switched bulbs the HPS bulb didnt work either. So apparently something is wrong with my ballast. I bought this brand new, its run almost a year with no problems, and today its done. Is this common? I would assume most ballasts Rating: 5