powerplay
Senior Member
- Location
- In front of a computer.
I changed a Phillips Advance T-12 ballast (Model RELB1S40SC for 3 or 4 foot ballasts) for an single tube F30 tube which the ballast is rated to supply. Within 30 minutes it started to buzz like an old style magnetic ballast. I beleive the sound must be coming from the ballast... is it due to bad endholders/contact, or simply a defective ballast? Thanks again in advance.