All you need is a screwdriver, a new socket and these few tips to get the job done. I have changed more of these ballasts than I can remember, but I have not replaced any of the fluorescent bulbs since I switched to T8. Many fluorescent fixtures have more than one tube in order to provide more light. I you can't figure this out, you shouldn't be messing with mains woltage in the first place. 11 years ago Things You Will Need Reply First of all unplug the light. When your fluorescent light flickers or makes a loud and annoying hum, a degrading ballast is the cause. ], 4000K Neutral White, Flush Mount 48 Inch LED Light Fixtures, LED Wrap Ceiling Light for Garage, Office 4.7 out of … 11 years ago The lights come with a warranty but removing the light and returning it about once a year isn't worth the trouble. I can't remember the voltage (not that high though) but the start voltage is current limited using a capacitor. Possible reason – during assembling of the unit the solder has got inside and after years has made the short circuit. In this video, I show the basic parts of a fluorescent lamp and how to replace the ballast. I will remove it as I install the new ballast, Remove the dead ballast and install the new one. An electric current in the lamp’s tube excites mercury vapor, which produces short-wave ultraviolet light that in turn causes a phosphor coating on the inside of the lamp to glow, producing light. Reply T8 tubes are more efficient and have a long life. I got tired of constantly replacing the fixtures, so I decided to replace the ballasts with high quality ones. All of the wires on this end will need to be joined together. First, check electrical power, then the light bulb, the ballast, and finally check the tombstone. A flickering fluorescent bulb means that it or one of a dependent pair of bulbs in the fixture has bought the farm. There are no marks stayed on broken ones. Cut all of the wires close to the ballast. All is normal now. Reinstall the shade, plug in the light and try it out.The result is you now have a light that is very efficient, it will work in cold weather, the tubes will last a long time and the fixture is dependable. These ballasts burn out all the time. I have chosen is Advance REL -2P32-SC because I found it cheap on ebay. I am not very qualified electrician and therefore I am looking for help – what exact type of resistors I must get to replace. If either bulb is bad, they may both flicker or one may flicker and the other show no life. This is how to change a fluorescent tube. I prefer to use T8 because they are more efficient than T12 and T8 will start in cold weather) and the wattage of the tubes you will be using (probably 32 watt)Small wire nuts.a pointed sheet metal screwScrewdriver1/4" Nut driverWire stripper. When a fluorescent light is flickering, a bad starter or ballast is usually the culprit, but not always. 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