The rest of the house lights work fine. Probably not. When this first started about 6 months ago, I replaced the 2 bulbs. 3. The fluorescent tube won't turn on (and is or isn't buzzing) The tube takes a long time to warm up and come on; The middle of the tube won't light but the ends are lit; The tube constantly flickers on or off; We are going to tell you what has caused the problem and how to check your starters and ballasts. Also, when poking around sockets or wires, use a voltage tester to make sure the electricity is off. The "No" part of this question is that the "conventional" dimmer switches you can purchase at the hardware store are designed for incandescent lighting only, not fluorescent lighting. Now the fluorescent lights won’t come on. Sometimes we take advantage of the fact that when we flip a switch, the light comes on. Sometimes there may be a slight glow after a fluorescent or LED light is turned off, however this would only last a few seconds. Hisense Smart TV won't turn onQuick and Simple Solution that works 99% of the time. Why won't Fluorescent Light come on? Once you notice the flickering in a fluorescent light bulb, it can be difficult to ignore the sometimes maddening effect. I hope this helps you, Dave. Although newer fluorescent fixtures have built-in starters or no starters at all, most older lights have an easy-to-change, visible starter. Here we suggest the steps to follow to determine if the problem is a loose bulb or lamp, or a defective one that needs to be replaced. The ionized gas then conducts electricity and the bulb lights. T12 take 40w to run, T8 need 32 watts. If I unseat the bulbs (handy being very tall :) ) and reseat them a time or three, the lights will come on. The lights come with a warranty but removing the light and returning it about once a year isn't worth the trouble. Before you replace the existing bulb, give it a twist and a jiggle -- sometimes that works. If they are small under-the-counter lights, they probably have a ballast on one end under the bulb. Power on button is not responding. If not, replace the ballast. When the day comes that you flip the switch and nothing happens, try these simple troubleshooting tips to diagnose the problem before contacting an electrician: They'll flash momentarily then stay dark. This can be for one of several reasons: Check to see if the lightbulbs in the light fixture have the proper wattage for the light fixture. If it has a starter (a small aluminum-looking cylinder that screws in below the bulb), replace that. The problem seemed to have subsided for a while. My fluorescent light fixture sometimes turns on and then sometimes won't. Are they broken? Before you take your car to the mechanic and spend hundreds of dollars to fix it, see if you can diagnose the problem and fix it yourself. This is because recessed lights are equipped with limit switches designed to turn a fixture off automatically if the heat reaches an unsafe level. When one or more fluorescent light fixtures are humming or flickering or if the light simply won't turn on, the problem may be something as simple as a bad fluorescent bulb. Question. Fluorescent light fixtures are commonplace in both residential and commercial settings. I have a light fixture in my kitchen on a two-way switch. I have several lights in my garage and basement from Home Depot that I installed about 3 years ago. Turn the power off before working with the fixture. Clearance Sale! However, if I turn it off again for any reason, it will NOT turn on again for love or money. You cannot mix fluorescent fixtures and incandescent fixtures on the same dimmer switch. If unsure what to do when working with electricity, it is best to hire a licensed electrician so that you do not burn your house down or injure yourself. I replaced both the fluorescent light bulbs but the light fixture struggles to turn on. My husband nor I have any electrical experience. It is a shinny round object about the size of quarter. Fluorescent tubes are a form of arc tube. 7 Turn the circuit back on. In addition, sometimes a recessed light fixture may mysteriously go on and of by itself. Loose contacts is definitely one possibility another is the transfer of static charge to the tube that kicks off the arc. Sometimes you can flip the switch on and off a few times and get it to … Fluorescent light bulbs have a … as the house was recently built. Either you won’t see it light up on your dashboard, or you won’t hear the clicking noise. Yes No. I replaced the ballast which fixed the problem for about 3 days. When it rains, and it's damp outside we have trouble turning the lights on. In fluorescent lighting, T stands for "tube," and the number after it is the diameter of the tube in eighths of an inch. Thanks! And if the old one is a CFL (compact fluorescent), don't spend much time thinking, "It can't be the bulb; they're supposed to last 10 years." Community Answer. The average lifespan of a fluorescent lamp is 12,000 hours or approximately 2.75 years used during the night when you are using T-12 HO kind of lamps that are usually used in exterior signs. From last three days i am regularly facing this issue. Log in to Reply . Here is how to troubleshoot a fluorescent light fixture that will not turn on or flickers.Many times when a fluorescent light starts to flicker or takes a long time to turn on the ballast or light starter is going bad. Gently push on the tube. Sometimes when a circuit breaker trips, it doesn't move all the way over to the "off" position. T8 = a one-inch diameter tube. Grab ahold of it and turn it till it comes out. Fluorescent lights from places like Home Depot look good and seem like a real bargain but the ballasts inside don't last. If you still don't see one tripped, then begin by turning off the 15 and 20 amp breakers. If only one light works in a fixture, is the ballast bad? Light bulb. The reason is that the physiology of all the fluorescent fixtures is not the same. Otherwise, try a new one. How do I fix my fluorescent light fixture? Need to be replaced? All fluorescent light bulbs contain hazardous substances like mercury and phosphorous and need to be disposed of properly. My Laptop Studio 15 does not turn on sometimes. They are maybe 1.5 year old. How to Troubleshoot a Bad Fluorescent Lamp Fixture. For some reason, the light switch needs to be flipped on and off multiple times for the light to turn on. I got this laptop 29th July 2010. The light and switch (single pole) have been in operation for 15 years. Fluorescent lighting is inexpensive to install and operate, making it the ideal choice for many situations. 1 Shut off the switch. When you hit the switch you see a flicker of light at one end of the U shaped bulbs but that is about it. When the starter stops working, the bulbs will either keep flickering without lighting or will only glow in the ends. Often when I turn the switch on, particularly after they've been off for at least several minutes, about 4 of them won't light. This can be frustrating. How do I fix that? My kitchen has 9 26W fluorescent can lights (not CFLs - they have external ballasts). I have two 4ft double bulb flouresent light fixtures in my Kitchn. When you turn on the light switch, the starter sends a jolt of electricity to the gas inside the fluorescent bulb. Most likely the ballasts are going out on the lights. The old, thick ones are T12, and they're being phased out. There are several factors that can make a fluorescent bulb flicker, and depending on the problem, you may be able to make a quick tweak that will help to silence your bulb and your brain. If just one of the fluorescent tubes does not light (with a fixture with 2 or 4 bulbs), obviously it could be a burned out bulb. 2 Remove the tube. Up to 50% Off! If the light has been off for a while (like first thing in the morning) it will often turn on when I hit the switch. Sometimes it does, but more often than not, it only has a dim light and the bulbs flicker. Some of them don't last 10 months. One of the lights stopped working, and I thought it was the light bulb, but it wasn't. When they do work, they don't flicker or are dim or anything, they work fine. One bulb pulsates. As I stated I changed the switch, but the light stays on constantly even without being connected to the switch as long as the breaker is on.The box has three set of wires, black/white/ground from the fixture, a black/white/ground, and a black/red/white/ground. Lamp ballasts and sockets, and eventually wiring, also will wear out as time passes so remember you’ll have to do regular maintenance. From houses to commercial usage, they have been of great usage. Especially in the morning. You may need to bypass the ballast for it to work properly. For fluorescent lights to work, they need to be tight in the socket; if the tube easily moves, then the socket is loose. I have two small under cabinet fluorescent lights which are only a few years old and have not been used very much. We have fluorescent under cabinet lighting installed by the builder. Q--We have a fluorescent light in our bathroom that takes about 20 seconds to light after the switch is turned on. Last night, the light just came on by itself. Right there is a 20% savings, so it's worth it to do an upgrade if you're getting fed up with your lights. The method to rewire the fluorescent fixture to accommodate the LED could not be an easy one. Not Helpful 5 Helpful 15. But sometimes the just won't turn on. Fix A Fluorescent Light Fixture That Buzzes/Turns Off . 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