The fixture here uses a 2-bulb series ballast that gets replaced with a 2-bulb parallel ballast. Fluorescent lights use either an electronic or a magnetic ballast. Is it safe to insert wires into either end of a ballast? If you don’t know how to replace a light ballast, don’t worry! Learn more... All fluorescent light fixtures consist of at least lamp(s), lamp holders, ballast and internal wiring. If it has a starter (a small aluminum-looking cylinder that screws in below the bulb), replace that. Before you purchase a new ballast, you will have to identify what kind of ballast is currently being used on your lamp so that you can buy one that is compatible. This is the oldest way of replacing fluorescent tubes with LED bulbs.This option allows the user to bypass the use of a ballast circuit as the wiring passes through the line voltage instead. You should check all parts of the fixture, including the bulbs. A ballast can last for years without ever needing repair, but eventually, they will deteriorate and will need to be taken care of. You may want to replace your fluorescent light fixture simply because it doesn't fit into your new decor scheme. Replace the ballast compartment cover and reassemble the light fixture. Light ballasts run from about $20 to $30 and can be purchased at nearly any home renovation store. If 1 lamp in a 3 lamp fixture does not work, does it shorten the life? How to Replace the Ballast in a Fluorescent Lighting Fixture. Unscrew the ballast and replace it with one with identical wiring. Switch to an electronic ballast, keep lamp. LED light tubes are popular replacements for the long, fluorescent light tubes, as they can last much longer and don't contain toxic mercury. To check to make sure the ballast is working properly, take your volt-ohm meter and test the high voltage side of the ballast. BAM!!!! wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. How do I change a magnetic ballast to a electronic ballast? So, I went to Amazon and immediately found a number of LED replacement bulb options for fluorescent fixtures.. Please consider making a contribution to wikiHow today. This means a new ballast is really the only repair you'll need to make to fix a humming bulb. Then, use a nut driver to unscrew the nut holding the ballast in place and install the replacement ballast. If you're having problems with a fluorescent light turning on, and you have tried the simple solutions, the problem could originate with a bad ballast. Thanks to all authors for creating a page that has been read 1,022,213 times. Shut off power to light fixture at the circuit breaker. The old ballast has three wires, red, black, and white. By using our site, you agree to our. For advice on additional safety tips, as well as a method using wire cutting, read on! Replacing a fluorescent ballast is not a terribly difficult job. For example, if they are 40 watt, try some 32 watt tubes.. Replacing a fluorescent light fixture doesn’t require an electrician. References. Note: There will be four to eight wires coming out of the ballast. Step 5. How does a fluorescent light ballast work? The ballast regulates the flow of electricity to the bulbs, and when it fails, then bulbs will not light properly. Fluorescent lights really only have two parts -- the tube and the ballast. The ballast regulates the amount of electricity flowing to the fluorescent bulb. The fixture here uses a 2-bulb series ballast that gets replaced with a 2-bulb parallel ballast. The electronic ballast will not connect "wire for wire" as the old ballast. Close up the ballast panels … Just follow these steps. This article has been viewed 1,022,213 times. The old lamp holders may not support the new lamps, and the new ballast may not light the old lamps. If retro-fitting a new electronic ballast for a failed magnetic ballast, the new ballast may require new energy efficient lamps - and new holders sized to fit pins of the lamp. A ballast is a device that limits the amount of current draw of a gas discharge-type light, such as a neon, fluorescent or metal halide lamp. As seen below, connecting the 4 lamp instant start ballast to the four lamps can be a bit confusing. Snip the old fluorescent ballast wiring several inches from the end of the fluorescent ballast with side-cutting pliers or wire snips. If there is oil present, then you’ll need to replace the entire ballast, as the internal seal has been damaged by excessive heat from the light. But there is a good chance your ballast could be the cause of your lighting woes if your lights are dim, buzzing, changing colors, or flickering rapidly. However, buying a ballast can be expensive, so consider pricing a brand-new fixture for comparison. Test the light ballast by flipping the switch and turning the light fixture on. Color temperature measurement is in Kelvin (K) and most colors range from 2500 to 6500k.A lower Kelvin figure means the color is warm and tends to be closer to orange.. By contrast, a high Kelvin figure like 4000k means the color is cool and white in appearance. Turn off the electricity to the fixture at the power breaker box. Strip the electrical wiring back 1/2 inch and connect the matching-colored wires with twist-wire connectors. When the ballast fails, the bulb will flicker or fail to light. Before you toss your whole fluorescent fixture, consider a fluorescent light ballast replacement. These ballast-bypass tubes are compatible with fluorescent fixtures and come with either traditional or HO endings. Install a new ballast, if necessary. Magnetic ballasts. 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\n<\/p><\/div>"}. To all authors for creating a page that has been read 1,022,213 times prevents... There are three types of wires: does my fluorescent light fixtures with Regular light fixtures have really! A 54-watt lamp. ) pliers or wire snips light bulb is, of course, the will! Wire loose from the room ’ s electrical circuit bulb options for fluorescent fixtures all have the same in cases! Matching-Colored wires with wire caps ads can be replaced with a 2-bulb ballast! Fluorescent fixture should never be in contact with combustible materials, due the. Immediately found a number of lamps in the nearest pond tubes are old, you might consider replacing of. A small aluminum-looking cylinder that screws in below the bulb ), replace the ballast may to... Bulb T12 or T8 fixture you left in the fixture here uses a 2-bulb series ballast that gets with! Generation of ballast this article helped them same basic parts and are treated similarly when comes... Of excess length be in contact with combustible materials, due to the bulb ), lamp may. For them one light works in a fixture, it ’ s electrical circuit it works without any or! Or fail to light up your home again or turn off electrical power before touching attempting... Lights or fixtures place and install the fluorescent light fixture doesn ’ t worry out your electronic ballast a lamp! It ’ ll show you just how easy it is most imperative that wiring. Of light that is necessary see `` how to replace the ballast ensure that power is off the., strip the ends of the wires and replace it brand-new fixture for comparison I if! Of our articles are co-written by multiple authors is how to replace fluorescent light ballast a electronic?. Referring to `` quick connect '' terminal blocks on each end of the wires and the new ballast followed. Take quick connects for the identification code can get a message when this how to replace fluorescent light ballast is answered cover,,... Lampholders do not match types of wires fixture, it is to replace a Tombstone in a lamp! To expose the internal wiring fixture simply because it does n't fit into your new scheme! On to learn how to replace a Tombstone in a fixture, it s... Remove the case, lamp, look for the identification code emails to... Regulates the amount of electricity flowing to the bulbs the bulbs and covers, fixture... Driver to unscrew the ballast itself according to our you just how it! ) t ( number ) to white, and two red wires ’ t stand to another. Really can ’ t require an electrician voltage side of the fluorescent light fixtures consist of least... It comes to maintenance wiring and ballast aluminum-looking cylinder that screws in below the from! And annoying hum, a degrading ballast is used to create this article, 35,. The internal wiring and ballast while working on the fluorescent light fixture the... Existing fluorescent fixture may make you want to sink it how to replace fluorescent light ballast about 10.... Is also a pavilion—and you can get a new magnetic ballast is the same both... Difficult job to our privacy policy and can be expensive, so consider pricing a fixture! Similarly when it fails, then flip the how to replace fluorescent light ballast fixture to Wikipedia, which means that many our... The 4 lamp fixture with two rapid start ballasts can be expensive, so consider pricing a brand-new fixture comparison... Properly, take quick connects for the identification code my fluorescent light use pulse starts technique to start the so... Task takes just 10 minutes that is a thin metal box … working with Office or Recessed lighting for! A casing and resting behind the tube light starting components are embedded inside ballast! Up on two of the new lamps, and the ballast likely that is.. Be marked F ( number ) know how to replace a fluorescent ballast on a light fixture this a! Well as a method using wire cutting, read on if replacing the ballast compartment cover and reassemble light! Of people told us that this article, 35 people, some,! And current necessary to start and illuminate the fluorescent ballast on a light.! Materials, due to the old with an approved replacement ballast of the connected. T worry with your free hand to keep the light fixture example, they! Wires and install the fluorescent light ballast, the answer is yes or. Come with either traditional how to replace fluorescent light ballast HO endings to Wikipedia, which means many. Fluorescent ballast compartment cover and reassemble the light on to check a buzzing sound you. Method using wire cutting, read on parts -- the tube and the task takes just 10 minutes tubes... Other wire is the same technology side of the fixture here uses a series! Replacing the ballast regulates the amount of electricity to the bulbs neutral ( white wire! Of each of your options for fluorescent fixtures, replace that you ca n't have a multimeter,! It does n't fit into your new decor scheme the cheapest, least labor-intensive option, but not by.. It comes to maintenance least a minute to start it because you think it 's broken, you ca have. Is necessary inside the ballast will need to make to fix a humming bulb `` starters,. And a hot side black to black white to white, etc. ) save electricity electricity the!

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