Famous Fluorescent Light Ballast Testing 2023. Voltage and current measurements present the possibility of exposure to hazardous voltages and should be performed only by qualified personnel. If the ballast is still good, the needle should sweep to the right across the face of the multimeter.

Voltage and current measurements present the possibility of exposure to hazardous voltages and should be performed only by qualified personnel. Web if you can’t find obvious signs of a bad ballast and you’ve already tried replacing the bulb, there are steps you can take to test whether your ballast is the issue. Unusual sounds coming from your light fixture can indicate an issue with the bulb.