FLUORESCENT BULB PROBLEMS , a simple how to video - YouTube If the tube moves, the sockets might be loose. Use a screwdriver to loosen the screws holding the prongs in place. (No pieces have broken off, just out of alignment.) Or, you can read the printing on the tube to identify the correct replacement type. The flow of electrons between the lamp filaments excites the electrons in atoms of mercury inside the tube, causing them to emit radiant energy in the form of UV (ultraviolet) light. 3. 616-621. Remove the fluorescent tube to access the sockets inside the light fixture. Tubes that are really defective usually have symptoms such as … Replacement Lamps, WHAT to DO if a COMPACT FLUORESCENT LIGHT (CFL) BULB or FLUORESCENT TUBE LIGHT BREAKS in YOUR HOME, ARTICLE INDEX to ELECTRICAL INSPECTION & TESTING, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, NLPIP, "What is the Light Output of T8 Fluorescent Lamps" (2006), [web article], National Lighting Product Information Program (NLPIP), Lighting Research Center, Rensselaer Polytechnic Institute, Troy, NY 12180 USA Vol. Just like any other bulb, a fluorescent bulb needs replacing from time to time. As I said in the intro, we noticed this happening over a 3-4 week period. In Power Engineering Society Summer Meeting, 2002 IEEE, vol. It has a 36 in. Dual-end powered tubes require electricity on both ends of the tube: one end is Live and the other end is Neutral. Start by checking the fuse hasn't tripped the power supply. What is cauing this? Most fluorescent light bulbs are reliable, but you may occasionally find some that malfunction. My apologies. Watch out: flickering or dimming lights at a building may be more than an inconvenience. Once the lamp is operating, voltage drops to a much lower level, usually around 93V for tubes under 30 Watts, or from 100-175 V for tubes at 30 Watts or more. After a little over a year the bulb died when the hood fell about two feet onto a cabinet. The first is to turn off the light at the switch as well as the breaker. Nemesis Lonestar: Fluorescent Lighting Troubleshooting, Home Tips: Troubleshooting & Repairing Fluorescent Lights. So if there were other sort of tubes I would be able to look into that and get appropriate tubes. Current flowing through the starter, itself filled with neon or a similar gas, causes an arc between the two contacts in the starter, essentially closing the circuit across the starter switch to permit a high initial voltage to flow to the lamp filaments causing them to heat up, boiling electrons off of the filament surface, ionizing the gas inside the tube or lamp and causing it to light. Start with the fluorescent tube or bulb. Bad Lamps. Watch out: flickering or dimming lights might indicate a dangerous condition risking a building fire or an electrical shock. We have no relationship with advertisers, products, or services discussed at this website. Fluorescent bulb won't turn on. You may also need to replace the sockets if turning the bulbs doesn’t seem to help. Rotate the tube 90 degrees and pull it toward you out of the lampholder. However, if a tube has been installed for some time, does not appear blackened at … In cases like these, you can test a tube by inserting it into a functioning fixture to see if it lights up properly. I can turn it about 20 degrees, but it does not come off easily. T8 or T12 Lampholder Kit - Turn-Type Lampholders - Medium Bi-Pin Socket Non-Shunted - Snap In or Slide On - For Use With 4 ft. Fixture - PLT-50145. Turn off the switch and take the tubes back out and put them back in making sure they're fully snapped in. 1, June 2006, retrieved 2018/09/17, original source: https://www.lrc.rpi.edu/programs/NLPIP/lightingAnswers/t8/02-t8-light-output.asp. If they are damaged or oxidized, replace them. Won’t Turn On. Note that I will be primarily referring to fixtures using straight fluorescent tubes in this discussion. Viewed 19k times 4. Also, when poking around sockets or wires, use a voltage tester to make sure the electricity is off. I've Google endless sites that all say just slide the pins into the groove and then twist the tube a quarter turn and bingo, it's in. I thought that "anything you attach fluorescent tubes to" is called a ballast. After a little over a year the bulb died when the hood fell about two feet onto a cabinet. A good compact fluorescent lamp is about 6-7 times more efficient than a standard incandescent lamp, so that a 10 watt CF produces about the same illumination (measured in "lumens") as does a 60 watt incandescent. Twisting the fluorescent tubes can tighten the connection and stop the problem. "Voltage flicker mitigation using PWM-based distribution STATCOM." If L/N is wired to one or both sides of these tubes, it will not turn on. Illuminate work areas and rooms at home or in the office with fluorescent tubes from Rona. In Canada or the U.S. call 911. Continue reading at FLICKERING FLUORESCENT LIGHT CAUSES or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. 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. In Mexico call 066. It's half way working now. Curved tubes work in a similar fashion but have different mounting methods. The ionized gas then conducts electricity and the bulb lights. I replaced all ceiling fixtures a couple of years ago and before this had no trouble removing and replacing bulbs. Just for curiosity I grabbed a chair and wiggled the tube in this one over the sink when it wouldn't start this morning. The electric current or arc excites the low-pressure mercury vapor which generates radiant energy, primarily in the ultraviolet or UV range. Hello, First I wanted to thank those who were giving me advice around thanksgiving on finding a neutral. Osram Sylvania Lighting, Website: http://www.sylvania.com, LEDVANCE North American Headquarters I had just bought my first house and was installing automation light switches and ran into trouble on a circuit that had 3 switches to control the overhead light/fan. If the light doesn't turn on at all, you will need to replace the entire tube. This is how to change a fluorescent tube. Most tube lighting will have its size mentioned on an end of the tube. The fluorescent LED replacement tubes today are able to offer quality one for one replacement and hit price levels that feature payback periods under 12 months. Other causes of flickering lights are very dangerous. Fluorescent fixtures can be serviced quite simply by the replacement method. It's normal to see a little dark color or shading near the ends of a fluorescent tube, but if the ends are very dark, the bulb may be worn-out. Answer Save. We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. I replaced both the fluorescent light bulbs but the light fixture struggles to turn on. Never had to wiggle a tube. Once the lamp is started, the gas offers a decreasing amount of resistance, which means that current must be regulated to match this drop. This. IEEE, 2002. The amount of … A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. How to change an untwistable (by design?) The Most Common Problems with Fluorescent Lighting and How to Fix Them. From here on out, you'll need to observe some safety precautions. If the fluorescent tube is flickering or dead when you turn the light switch on, remove the light diffuser, if any. fletchb. To remove, press on the clips or detach the screws holding the diffuser. A fluorescent lamp is a “gaseous discharge” light source. Tube Guards; 1-800-624-4488 . The fluorescent LED replacement tubes today are able to offer quality one for one replacement and hit price levels that feature payback periods under 12 months. Right there is a 20% savings, so it's worth it to do an upgrade if you're getting fed up with your lights. Check the prongs of the sockets. If the fluorescent tube is flickering or dead when you turn the light switch on, remove the light diffuser, if any. Unhook all wires attached to the ballast. Fluorescent bulbs are long tubes held in place by pairs of pins. Instructions on How to Change the Fuse in a Fluorescent Light Fixture. These photos are now at FLUORESCENT LIGHT BULB PHOTOS, For bulb dimensions see the table at FLUORESCENT LIGHT BULB CODES & TYPES, This discussion has moved to REPLACE a FLUORESCENT LAMP / BULB, This topic is now found at FLUORESCENT LIGHT STARTER REPLACEMENT, This information is now at FLUORESCENT LIGHT TRANSFORMER / BALLAST REPLACEMENT, Please see FLUORESCENT LIGHT TRANSFORMER / BALLAST TYPES, This material got a promotion to its very own page, now found at FLUORESENT BULB SOCKET TYPES, Please see this page: FLUORESCENT LAMP CONNECTOR / SOCKET REPLACEMENT, Please go to FLUORESCENT LIGHT FIXTURE BULB / BALLAST DISPOSAL. Once successfully lit, the fluorescent lamp remains on, operating at a lower voltage, giving off light as the ionized gas excites the phosphorescent coating on the inside of the lamp tube. Every guide to changing a flourescent tube light I can find has the same basic two steps: twist, usually 90 degrees, then slip the two pins out through the slot. I had dozens of four footers in the shop. Make sure you save any screws or clips in a little pile for re-assembly. 13 years ago . Don't go buy more, but if you have other new tubes try them. Exposing the bulb to moist air will cause these prongs to corrode, reducing the performance and life of the bulb. A fluorescent tube is a long, thin type of light that is attached to fittings on walls and ceilings. Once removed, look at the fluorescent tube for dark spots near either end of the bulb. Once removed, look at the fluorescent tube for dark spots near either end of the bulb. For fluorescent lights to work, they need to be tight in the socket; if the tube easily moves, then the socket is loose. To install a new fluorescent tube, insert the tube's prongs into the holder and twist the tube to lock it into place. Browse 1000Bulbs.com for more pre-wired retrofit kits! Bring the old prongs to the store so you will know which size to buy. Fluorescent bulbs insert into connectors known as tombstones because of their design. This discussion is now at FLUORESCENT LIGHT BULB CODES & TYPES. I've switched out the old lights for the new ones. Wiggle the sockets to test if they are loose. T12 take 40w to run, T8 need 32 watts. Both are correct, though "tube" is the more correct term and probably a little less confusing. My apologies. A fluorescent tube that is failed or failing usually has darkened areas near one or both ends of the tube. - sources: adapted from IMERC & Sylvania cited in detail, at FLUORESCENT LIGHT FIXTURE BULB / BALLAST DISPOSAL and. Because current is now flowing through the ionized gas inside the fluorescent lamp the starter is no longer needed. Lin holds Bachelor of Fine Arts and Master of Arts degrees in graphic design and interior design, respectively, from the Academy of Art University in San Francisco. After changing to a known-good bulb and trying a new starter I figured that the ballast was probably bad. First, our laundry room light was struggling to turn on for several days prior this. Below: our photo shows arc flash burning found inside of a fluorescent light fixture that was dis-assembled for inspection and repair. Replacing a Fluorescent Light Starter Inside a fluorescent light, electricity is delivered to a ballast, which sends a spark through the mercury-vapor-filled tube (or bulb), creating light by activating phosphors that coat the inside of the tube. 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. How do I fix my fluorescent light fixture? Inside a fluorescent light, electricity is delivered to a ballast, which sends a spark through the mercury-vapor-filled tube (or bulb), creating light by activating phosphors that coat the inside of the tube. If electricity is connected to the wrong end of the tube, it will not turn on. They also use 17 watts per bulb, compared to 32 watts for the regular fluorescent tubes. InspectAPedia tolerates no conflicts of interest. Part of the series: Home Improvements: Bath, Electric and Around the House. This radiant energy causes the phosphor coating on the inside of the tube to “fluoresce,” converting the ultraviolet light (invisible to the human eye) into visible light. Corrosion. So a little over a year ago I purchased a Zoo Med 18" Reptisun Terrarium Hood, along with a Reptisun 10.0 Fluorescent Tube to fit. Sun, J., D. Czarkowski, and Z. Zabar. Here we discuss the diagnosis and repair of flickering or humming fluorescent light fixtures. Aside from a burnt tube, other factors, such as a worn starter and loose or oxidized electrical contacts, can contribute to a fluorescent light not working properly. If the simple bulb or starter repairs we describe here don't cure the flickering, switch off the bad-acting light fixture, leave it off, and ask for help from a licensed electrician. Separately at FLICKERING LIGHT DIAGNOSIS - home - we give the causes (and cures) of all types of flickering lights. Turn off the light switch and wait for the bulb to cool, then remove it from the fixture and try it in another fixture that you know is working. I have a broken fluorescent tube (housing is intact, but it flickers instead of lighting up properly) that I have to change (bottommost type in the image). The diagnosis and wiring diagrams shown here are for a 30-W T8-type two-bulb light fixture. 1. Fluorescent lamps have two electrical requirements. Fluorescent Lamps and There are 4 different fluorescent light options; T4, T5, T8, and T12. I use the term "bulb" and "tube" somewhat haphazardly and inconsistently. The prongs on a traditional fluorescent tube are made of metal and are relatively exposed to the surrounding air even when installed in a fixture. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Turn the bulb about 90 degrees towards you to orient its pins vertically in the slots. But, these are not really fluorescent tubes, they are actually LED bulbs, that fit into the fluorescent socket. Most fluorescent tubes flicker or swirl for up to 100 hours when brand-new. This glass LED linear bulb looks and feels like fluorescent and has a cool white light and long lifetime.16w LEDLasts 36,000 hours1800 lumens5000K . 9 No. tubes changes the spectrum of light produced. It flickers constantly. Product Search. [Click to enlarge any image], Line voltage enters the ballast / transformer where it is converted to high voltage to operate the lamp. My Fluorescent lights in the living room won't turn on all the way. At first I couldn't get it to work, despite following countless instructional videos online. Fluorescent lights are a common fixture in most homes. To replace, remove the old tube and bring it to the hardware store. Fluorescent light bulbs are commonly used in photographic light and kitchen light fixtures. Versatile LED bulbs are energy efficient, and they create a non-dimmable soft white light that’s ideal for industrial environments, and similar work spaces. If they are, tighten the screws on the sockets using a Philips screwdriver. I went out today and bought a new 120cm fluorescent bulb along with a new starter. The fluorescent tube won't turn on Potential causes: No electrical power due to a tripped breaker or blown fuse; A dead or dying ballast; A dead starter; A dead bulb; Checks: Check the power supply to the bulb . Single-end powered tubes require both Live and Neutral power on one side of the tube only. When the starter stops working, the bulbs will either keep flickering without lighting or will only glow in the ends. Fluorescent bulbs run cooler than incandescents, and water may condense on the exterior of the bulb, presenting a significant shock hazard in an ungrounded fixture. Push it toward one end, rotate it 90 degrees to release the pins and pull it out, being extra careful not to let it fall. When trying to change a burnt out 4′ fluorescent tube in my kitchen ceiling, upon removal saw that one lamp socket has “inner” piece turned so that there is no vertical line for prongs to fit into. Do not over-tighten the starter when installing it. A fluorescent light fixture may be the only electrical device that is flickering, for any of several reasons we will explain below. Fluorescent lamps are more energy efficient than Avoid the confusion of changing from fluorescents to LED lighting with the PLT-50145 retrofit socket kit. Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the. Turn on the voltage tester and point toward the sockets, one at a time, to make sure there is no current in the socket. Our sketch above illustrates the basics of how a fluorescent lamp works. 4. When the circuit supplying power to the lamp is switched OFF current ceases to flow through the fluorescent lamp - it is turned off. The tube must be tight in the socket for it work correctly. Also, the box of LED tubes does not mention anything about ballasts. Repeat this with each bulb to remove it. Lv 4. fluorescent tube light bulb in a fitting with no slot? There are also no other choices of LED tubes, they only had philips LED tubes available. Fluorescent tube lights are an excellent long-term choice for factories, storage rooms, and garages. 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 T stands for tubular and the numbers are an index for the diameter (in inches) of the tube. At first I couldn't get it to work, despite following countless instructional videos online. Changing fluorescent tube: how many degrees to turn? It's worth a try. Most fluorescent tubes flicker or swirl for up to 100 hours when brand-new. It didn't act up for the last ten for me. So, in most cases, you won’t have to physically measure the tube’s diameter and length. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. In fluorescent lighting, T stands for "tube," and the number after it is the diameter of the tube in eighths of an inch. If any of the components are faulty, the light won’t work right. Removing a CFL bulb is easy because you just have to unscrew it, but removing a fluorescent tube is a little trickier. converted to usable light and less is converted to heat. Ask Question Asked 4 years, 11 months ago. Once you pinpoint the problem, most fixes are very easy. How can i fix this problem please! Please don’t hesitate to get in touch with us with any question you might have about your upcoming fluorescent tube replacement project. Curved tubes work in a similar fashion but have different mounting methods. Using this method, a commercial installation can have a high voltage of up to 277V, but, this can be dangerous if safety standards aren’t followed to the letter. If the lights work for a period of time and go out on their own, that usually indicates an over-heating ballast - replace the ballast. A--The tubes are often suspected when fluorescent-light problems occur, but there is frequently nothing wrong with them. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. But there are other causes of flickering lights: some are also trivially easy to repair while others require more expertise and cost. Rotate the first tube 90 degrees. Replace the tube if spots are present, as this condition indicates that the tube is close to failure or defective. Turn off power, remove the old ballast and take it with you to the hardware store to match ratings and configuration. Reach up, and gently support the first fluorescent tube with both hands, keeping your hands as close to the ends of the bulb as possible. Troffers and LED Linear To remove, press on the clips or detach the screws holding the diffuser. Let's look at just how a fluorescent lamp works in more detail. Please don’t hesitate to get in touch with us with any question you might have about your upcoming fluorescent tube replacement project. Those filaments remain hot as long as the tube is lit or "on". Inspect the contacts at the end of the wiring inside the socket after removing the prongs. it's so dark it's just a faint glow like its struggling to start up. While some causes of flickering lights may be normal and harmless, such as flickering in certain types of light bulbs, many others indicate a dangerous condition, risking fire, shock, injury or worse. 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. Single-end powered tubes require both Live and Neutral power on one side of the tube only. Old fluorescent light fixtures use starters, also called ballasts, for lighting the tube. Now the fluorescent lights won’t come on. You can usually identify the problem with the aid of a few simple diagnostic tests -- and virtually no special equipment required. You will be able to rotate the tube in either direction a quarter-turn until it stops. Then it just stopped working altogether. He is a professional digital graphic artist, interior designer and Web developer. Won’t Turn On. Remember to turn off the power first! So, I handed it to my father, who twisted it around a bit and had it working. For fluorescent lights to work, they need to be tight in the socket; if the tube easily moves, then the socket is loose. If the fluorescent lights in your kitchen take a while to turn on, several different components might be at fault. Active 4 years ago. But doesn't fully light up and stay on. operate at a very low gas pressure. Indicated by dark circles at the end of the lamps. 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. Please make sure that your tubes are wired correctly. If you give me 5 minutes I’ll show you how to fix this and you’ll save $75 to $90 by doing it yourself. The plate is usually screwed or clipped in, and easily removed. These are usually cylindrical, silver in color and screwed onto the fixture near the tube. Wipe off any green or white oxidized material on the wire contacts with a cotton swab dipped in cleaning alcohol. "Retrofit" tubes work with all fluorescent fixtures as well as ballast-free LED fixtures. The high start-up voltage, at 400-600 V, is supplied by an electrical transformer or ballast in the light fixture. 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 diagnostic procedures for other fluorescent light fixtures will be the same, though the final wiring details will differ for other models of ballast or transformer. Images × Images; Video; Make an energy efficient choice and use this PLT retrofit socket kit to transition from fluorescent to LED operation. A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. 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. When first turned on the CF must be heated near its ends so that an electrical arc can be started. The safest approach is to turn off electrical circuits or components that are causing flickering or dimming or acting strangely in any way. This option allows the user to bypass the use of a ballast circuit as the wiring passes through the line voltage instead. Steps in diagnosing and repairing a flickering fluorescent light: 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. Work 1 bulb at a time to ensure they don’t fall and shatter. Ask Question Asked 4 years, 8 months ago. Position yourself to look directly into the end of the lampholder at the end of the tube. Each fluorescent tube has its own starter. Philips InstantFit LED tubes easily replace fluorescent T8 tubes operated on instant-start electronic ballasts, no rewiring needed. But there are other causes of flickering lights: some are also trivially easy to repair while others require more expertise and cost. Gently push the fluorescent tube in its socket. 1, pp. Y.T. However, if a tube has been installed for some time, does not appear blackened at … Recommended spot to keep reading: FLICKERING FLUORESCENT LIGHT CAUSES, This topic is discussed in detail at FLICKERING FLUORESCENT LIGHT CAUSES. fluorescent light won't turn on in damp humid weather. Active 4 years, 11 months ago. Troubleshooting fluorescent lights is typically not complicated, but involves the inspection of several parts of the light. When the circuit supplying the lamp is switched ON current passes first through the ballast, then across the filaments at one end of the lamp, following the path of least resistance through the starter switch and on through the filaments at the other end of the lamp. In rare instances, the end on the tube will detach and will not rotate while the glass tube is rotating. Learn about our policies, benefits and more. But the problem still occurs. So a little over a year ago I purchased a Zoo Med 18" Reptisun Terrarium Hood, along with a Reptisun 10.0 Fluorescent Tube to fit. koloc. Here we sort out the causes and cures for flickering fluorescent lights, and we give details for wiring connections when replacing the ballast or transformer for the fluorescent light fixture shown. Also, when poking around sockets or wires, use a voltage tester to make sure the electricity is off. there is no filament to burn out. Take the old starter to the store. Viewed 28k times 4. Q--We have a fluorescent light in our bathroom that takes about 20 seconds to light after the switch is turned on. As current continues to flow through the starter, a bimetallic strip in the starter heats, curves to close a metal-to-metal contact, stopping the arc inside the starter (as current now flows through the metal contacts). You can put them off to the side. So, in most cases, you won’t have to physically measure the tube’s diameter and length. T8 = a one-inch diameter tube. Relevance. If you cannot safely access your electrical panel to turn off dangerous circuits or components, leave the building and call your local emergency services. Precaution: Identify the light fixture circuit, turn it OFF and Tag it with a Note before working with the wiring. This would be an archaic light fixture, just plain old. I hit the light-switch and the light does not turn on or even flicker. I use the term "bulb" and "tube" somewhat haphazardly and inconsistently. Fluorescent light is produced by passing an electric arc between tungsten cathodes in a neon tube filled with a very low pressure mercury vapor (about 0.3 atm) and an inert gas such as argon, neon, or krypton. The light diffuser is the plastic piece that covers the light fixture. At DIAGNOSE a BAD FLUORESCENT LAMP / BULB we list the things to check if the fluorescent light won't turn on or if it flickers or buzzes. To start the lamp, a high voltage surge is needed to establish an arc in the mercury vapor between the lamp filaments at each end of the lamp tube. ( the tube ends just glow orange) Fired right up. Insert the new prongs in the socket and tighten with the original screws. Press the starter in, then turn it counter clockwise to unscrew. Fix A Fluorescent Light Fixture That Buzzes/Turns Off. Both are correct, though "tube" is the more correct term and probably a little less confusing. Constant flickering? No it's not! This is a pretty simple task. at FLUORESCENT LAMP INSTRUCTIONS, PARTS, REPLACEMENTS respectively. If the light starts to flicker, or if only one end of the tube works, the starter will need to be replaced. Fluorescent lighting and how to change the color temperature of the bulb to moist air will cause prongs... No relationship with advertisers, products, or fluorescent tube replacement project at the switch really fast a times. Be at fault if a tube by inserting it into place 8,000 fluorescent tube won t turn 15,000,., 11 months ago size and voltage rating imprinted on the tube lights up properly the regular fluorescent tubes tighten. Wiring diagrams shown here are for a non-working fluorescent light bulbs are used. To identify the problem with the original screws wired correctly lifetime.16w LEDLasts 36,000 hours1800 lumens5000K sockets wires. Tubes, they are loose testing, diagnosis, repair, & problem prevention advice the tube non-working light. 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