if a new bulb doesnt help you obviously have a problem with one of the components in the ballast wether it be an ignitor, capacitor, or ballast there really isnt a good way to test them without knowing the specs from manufacturer and having a meter to do the tests and even then its often easier just to change one component out at a time with a known good one and try it out.
bejay Reviewed by bejay on . Dead HPS ballast, 1000 watt-HELP! i just switched my 14 plants from an extensive flouro gig to a 1000 watt HPS about 4 days ago. Everything was fine until today when i discovered that the circuit i was running off of was also running some other things which we thought were on their own circuit. I had alot of other things running on the circuit, I just didn't know it was the same circuit. One of the things is a computer with a UPS ( a battery) for power outages. If there is a drop in current the UPS makes a beeping sound. ( i Rating: 5