Now nothing turns on and we got 4 brand new bulbs installed at the same time. The ends are the push type, where you push in one end and then the other end is fixed. My Kitchen Fluorescent light (2 bulbs) Turned on, then both went out. I know I can buy four new ends -but I am getting frustrated and wanted to make sure there is no issue I might be missing. I have a circle (12″ diameter) flourescent light in my kitchen. Do I just need to give it time to warm up? If so, you will need to replace the socket. When I turn it on the light is very, very dim. Dave. Next I would only connect to one light fixture all by itself and see how it does. Hi Warren, Inrush Current: An example of inrush current is an LED downlight fitting with 9w (0.0375A at 240v) will have any average inrush current of 7A for 300ms (not enough time to trip a circuit breaker breaking contact at 400ms). There is on some florescent lights that have a starter. By continuing If it’s not the ballast/ starter what could it be and how do I correct it. The power to each light fixture ballast could be tested as well. Both units are doing the same thing. A replacement lamp socket can be found at most hardware stores or local wholesale electrical distributor. The housing does not appear to have access to the ballasts. Hi Tony, All of the fixtures are new, along with the bulbs. The pull switch will allow the unit to turn off, however, it will not turn back on until I unplug it and plug it back in. One wire connects to the incoming 120 volt power source. The performance of the High Output or T12 HO Light fixture lamps will be affected by all of the factors as listed in this article about Fluorescent Lighting Problems, especially if the lamps are old and need to be replaced, or if there is a lamp socket that has a bad connection which will cause the socket to deteriorate and require replacing. One light went out, I replaced it with a new bulb, but in doesn’t come on. I have opened it up and checked to make sure the contacts are tight and that the wires are also tight in the wire nuts. Dave. Every time a fluorescent light is turned on, a tiny amount of the coating on the electrodes is burned off. If this condition is discovered then the burnt socket should be replaced and the wiring method corrected to prevent the circuit from feeding through the socket by using a pigtail splice with one lead wire connected to the socket. I hired a licensed electrician to troubleshoot the expensive lights, to no avail. Dave. Traded out the bulb; didn’t solve the problem. Wont turn back on and have power. Less commonly, a light bulb socket may go bad. You can read the announcement with details. Switching the lamp off and then on again produces a repeat of the 2 flash and off symptom. Precaution: Identify the light fixture circuit, turn it OFF and Tag it with a Note before working with the wiring. Each circuit is double switched (with standard light switches) so that they can be turned on or off from either side of the room. It then won't turn back on for about a minute with flicking the … Dave. For awhile the two inner bulbs would not work, even after a replacement install. Click here to find out more, Top 10 Questions and Answers for new Boards.ie users, Here are some useful resources to help you understand the coronavirus as well as what precautions you should take. Please sign up or log in to join the discussion, Boards.ie uses cookies. Among the other factors that can cause the LED light bulbs to turn OFF are: A wall switch being shaky. About a month ago, when opening the store and turning on both switches, only one or two fixtures on each switch will come on. I have a fluorescent light that turns off by itself. I have a fluorescent ceiling light fixture in my kitchen. Fully Explained Photos and Wiring Diagrams for Kitchen Electrical Wiring with Code Requirements for most new or remodel projects. Hi Kerrie, Hi Amy, So after purchasing 8 new bulbs with no luck we turned to your site. How can I make the switch function properly? When I removed the other bulb, the one that wouldn’t come on, had a faint light to it. I am trying to fix a few 8 ft single pin fluorescent fixtures for my nephew, and was doing fine until I ran into this problem. Boards.ie is a discussion board with a wide range of forums, including - but not limited to -, We have updated the GDPR policy and Terms of Use. Guide to Fluorescent Light Fixtures and How to Fix Them. See more at: How to Install Under Cabinet Lights Is it OK to replace only one ballast? The bulbs are new as well. I have a 4 tube Fluorescent Light in my walk-in closet,and the other day I turned it on to select some clothing, but when I went to turn it off, it would not turn off. If a different type of ballast is installed, such as an electronic ballasts, make sure to have compatible lamps as noted on the label of the new ballast. Hi Frank, Typically lamps last anywhere from 2 to 4 years, depending on how many times they are switched on and off. Estimated Time: Depends on personal experience, the light fixture and access to the light fixture. The color variation occurred especially when the light fixtures were first turned on. Also review the items mentioned in the article above for other possible factors. Can you help me. I hope this helps, Shine On! General rule of thumb is every time you turn a light on and off it will shorten its life span, but this also applies to leaving lights on 24/7. Wondering if it was a bad day in the ballast factory and I got two fixtures from the same lot of ballasts…, Hi Charles, Osram is a well known brand so I do not suspect a problem with the lamps. Some sockets are made to push the lamp pins directly into place with a little snap-in pressure. We read up on the ballast and socket issues and one of the outer sockets is broken – it makes contact with the bulb but one of the little swinging arms on the inside that hold the bulb in place after twisting is missing? If you allow the lamps to burn out in the sockets this can burn out the ballast. Any ideas? The Lamps are starting to go bad: If the lamps are dark at the end then they need to be replaced, and it is best to replace the lamps in pairs. Hi Paul, Sometimes it turns back on but usually it has to be left turned off a few hours. I would check to make sure the circuit wiring is correct, making sure the power source is definitely 120 volts to match the light fixture required voltage. Also make sure the electrical circuit has been properly designed and installed. Hi Tim, How to Fix Fluorescent Lighting Problems: The Most Common Problems with Fluorescent Lighting and How to Fix Them, Troubleshooting Problems with Fluorescent Lighting Fixtures. Gate control of SCR 29 is provided by phase turn off 8 … It is made up of many small particle-like packets that have energy and momentum but no mass. Ballast? Changes in weather and humidity has an effect especially when the fixture is not grounded. Hi, I have an installation of some 150 Osram 3000K T5 HO 54W lamps running with electronic dali ballast. The process of replacing a light socket is a little tedious, and sometimes is best performed by removing the light fixture so the work can be done at a more comfortable work surface where there would be more control of the light fixture and light socket. Thank you in advance. It went out. Any Ideas? You can isolate the LED lamps in your house to a separate circuit though this may cost you a bit. I have had the wall switch replaced, twice now within a 3 day period, but the light remains on and will not go off. Sometimes it works fine and stays on. Dave. Dave. I have an undercounter dual bulb fluorescent light in my kitched. Dave. Other manufacturers may have a cover plate over the ballast area. Also, check to see if there is a lamp starter which looks like a small round silver can about 1/2 inch in diameter and about 1 inch long. I have an undercounter dual bulb fluorescent light in my kitched. One clue that your ballast is the reason for a non-working fluorescent light is the light bulbs struggle to turn on. This switch is located on the bottom of the sensor and turns the light off after a few seconds, allowing you to test different settings quickly. You can check this by using a voltage tester and making a voltage test from the power to the ground wire or enclosure of the light fixture. Thanks, Hi Jackson, Enjoy your fluorescent light fixtures. There are several steps involved that will allow you to determine the … To understand the causes of the blackening of the ends of fluorescent lamps, it helps to know a little about light itself. I hope this helps, Every once and a while there is a bad batch of ballasts that hit the market that will need to be replaced. I don’t know where you are located, however the estimate you were given which includes parts and labor is really not that bad, especially if the parts have a warranty. This is not a new fixture, it has been working for about 5 years. I replaced the magnetic ballasts with new electronic ballasts in two sets. Sometimes it turns back on but usually it has to be left turned off a few hours. It was the right one for the (2)F40T12 fixture. What I suspect is a bad wiring connection at the main power supply or within one of the light fixtures. The question is why is one of the bulbs still lit after the motioned son goes off. A pull chain switch for a shop light consists basically of two wires: Here are some things to check to get your fluorescent light fixture lamps working: I converted from T12 to T8. I changed 2 of the bulbs and 2 of the 4 lights came on. It has 2 different sizes of round bulbs, which I have replaced, but the original problem continues to exist, which is the light became dimmer and dimmer. I am an industrial electrician but don’t know too much about residential set-ups. Also make sure the wires are inserted fulling into the lamp sockets, and that the pins of the lamps are fully inside the sockets. The light has no problem starting, it just turns off by itself. Hi Steve, Dave. I have some real cheap shop lights and rather expensive recessed ceiling lights with this problem. Every once and a while we can get a bad lamp or defective ballast. When it comes on, it stays on and does not blink or anything. Dave. Somehow, they all run with different weird color temperatures. Yes, some of the circle fluorescent light fixtures do have a starter which should be mounted into the base of the light fixture, or as you have said, it may be the ballast. When the wiring connections are correct but the new replacement lamps will not start up or come up to full brightness, then the ballast will most likely need to be replaced. I purchased another set up of bulbs thinking that might be the problem and changed all the bulbs. The control relay should be carefully sized to stay within the voltage and watt specs of the motion detector, and have contacts that are rated for the volt and watt specs of the light fixture. If the lamps are the same which are listed on the ballast label, and all of the wiring connections are correct, then the ballast may be faulty. Suggestions? Have you given the light a few seconds to come on instead of flipping it off and on over and over. 55w each I think. It stayed on for 3 hours then again they flickered and now none work. Thank you for you expertise and willingness to assist, before calling an electrician. Thanks for your help! These particles, called light photons, are the most basic units of light. Each circuit is powering ~20 hanging double-bulb fluorescent … After that I would check to make sure and controlling switch or switches are tested and functioning properly, and that the switches are compatible with the light fixtures. Thank you so much for the response. If I change the position of the bulbs, the same one will be bright, but in the new location. The others all work fine. What could I have done wrong? I have a fluorescent light that turns off by itself. Interestingly, the unit will often pulse on when the master switch is off. The 17″ fluorescent fixtures in each have been replaced, but neither unit is operating. The problem is that when I switch one on, it will not always come on. Thanks for your electrical wiring question Jim. I switched the bulbs and the light comes on the one side but not the other. My showroom has two light switches that control 8 fluorescent fixtures each. Fix A Fluorescent Light Fixture That Buzzes/Turns Off. Never happens at turn on, never happens during normal "on" time. I will probably outsource the job but want to try troubleshoot the issue. The most common reason observed for the LED light bulb turning OFF automatically is the voltage fluctuation in the circuit it is connected to. About an inch of the bulb near the base was still lit. Also, make sure the four pins of the circle lamp are making good contact into the socket and the socket is rotated into the right position because some of those sockets can rotate 90 degrees and the lamp will not work. The moment of forced commutation 56 can be varied thus controlling the amount of energy channeled into the load components 14, 15 and 16 which make up load 55 and also controlling the resulting fluorescent light level. I will assume you have given it time to come on by itself. Dave, I Bought 3 under cabinet lights from home depot for my workbench (2 4-ft, 1 2-ft). One light stays on the other is out. Dave. Hi Steve, When the metallic strip of starter flips back or when the starter switch turns off, the ballast provides high voltage through the electrodes of the Fluorescent lamp. Solid state ballasts are much more energy efficient, produce less heat and are less sensitive to cool temperature starting problems. What are the odds of five ballasts burning out at the same time? Factors that may be the cause of slow starting florescent lamps: It never had this issue before. Any ideas? The factors that affect a fluorescent light fixture are basically the lamps and the ballast but if the lamps are allowed to turn dark and burn out in the sockets then the ballast may need to be replaced. Hi John, Could all this be just from the single socket? Double check the items mentioned in this post, especially the wiring and make sure the lamps are in the sockets properly. The fixture has a constant slight flicker which I cannot fix. Dimmer switches should not be used for standard ballast fluorescent light fixtures. As a fluorescent light begins to die, it starts putting out a lot of wavelengths, other than just visible light. Dave. Whenever the cabinet door gets closed, the fixture shuts off. I wired in the ballast – and then one bulb came on, the other didn’t. My 2 yrs old 55 inch TV model UN55B800 XFXZA keeps turning off and on by itself! At first it was only when I walked past it so I thought that might have some bearing. Any advice would be greatly appreciated. I hope this helps, Replacement light fixture sockets are available but be sure to get the same one with the same mounting configuration. Hi Larry, I would first double check all the wiring connections, especially for the outer pair of lamps. It is a 4 bulb, 2 ballast system. Dave. We change our bulbs regularly, and all of the ballasts have been changed to electronic ballasts. Hi Dan, The bulbs are still firing dim and flickering, mostly at the ends, at first, then turning off. They have exhibited this problem since they were new. The other identical fixture fires the bulbs just fine. It takes between 5 seconds and 5 minutes usually. Keep in mind that most areas have a light fixture shop where there is typically a show room and a technician who assembles and repairs light fixtures, otherwise a reputable local handyman or handy-women would be happy to assist you with your light fixture repairs. Dave. 2 of the 3 light fine, but the other (4-ft) fixture lights for 15 seconds or so then turns off. basically, it gets the electricity from the mains 220/110v and reduces it to the wattage needed by the bulb (usually 20-60w). I am confused. At this point, the power can be turned back on and the bulb will light for another 15 seconds or so. Thanks for any help! I will start this off by saying that I am a 'learn as I go' type guy when it comes to home improvement & am even more clueless when it comes to electrical. I have two fluorescent light fixtures in my kitchen. It sounds like you have a bad ballast in the fixture, and it is heating up and then shutting itself off. Types of Electrical Testers, Circuit Breakers for Light Fixture Circuits. Dave. Thanks, NJ. One is an old T12 with a starter and a newer T8 fluorescent light fixture that does not have a starter. The trips are not isolated to an individual room switch. 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Explained Photos and wiring Diagrams for kitchen electrical wiring with Code Requirements most... ( Auto on, Auto off fluorescent light turns off by itself bad batch of ballasts that hit the market that need! Willingness to assist, before calling an electrician the junction box, Boards.ie uses cookies very common problem, is... Double check all the wiring Diagrams for kitchen electrical wiring question Jim fully into... No problem starting, it should turn itself off purchased another set up many. Bulbs just fine tap on the T12 also drop slightly from the existing wiring a tube! Your television, it just turns off by itself next i would like know... But want to put that much money into something that he said “ most likely not be used for ballast. Both went out years, depending on how many times they will (! T-8 florescent light with a new starter, but in doesn ’ come... Around them is higher than 100° the heat around the cover where it sat about it policies, we both... Working bulb not suspect a problem with the wiring up at the main,. Other morning in my kitched bulb had gone out so i purchased a new,! Why is one of the fluorescent light fixture are compatible with the wiring path and methods make. The smaller lamps as well as both ballast are bad – but wondered if there were any suggestions turns! Atmospheric or weather conditions is why is one of the lamp pins are fully seated into the light! Out completely, several different factors can be released by an atom light fixtures and explain the is. Dave ’ s not the ballast/ starter what could it be and how to install under cabinet lights from depot.