The basic circuit below has a switch made using a small piece of paper and 2 paper clips to break the flow of electricity which allows the bulb to be turned on and off. We replaced most of the switches and receptacles a couple months ago with new Leviton Decora 15 amp. We live with electricity every day, but the reality is that itâs far from harmless. Instead, make sure appliances are turned off while plugging them into an outlet. See how wiring electrical outlets for the home are done. High volts and current on incoming water line. You'll get a bigger spark when you switch stuff off. This new cooking technology had the advantage of being easily adjustable and could be turned off when not in use. Switches normally arc slightly when flipped on or off. Turn the switch off, then repeat the test. What happened and how do I fix it? Crocodile leads. When they wear out, they don’t work or, worse, they give off sparks. Last night when I turned on the switch to the light/fan in my bedroom a huge arc (flash of flame) erupted from the switch! Toggle Switch - 3A, 120VAC / 28VDC COM-16724 . The circuit is being completed by the contact (B) mating with contact (A). If possibly try to turn the appliance off at the switch/thermostat on the appliance, then off at the wall. An arc flash can be the result of an electrical load that is being switched on or off, or an electrical fault. Switch Contact Block - 1.5A 250V COM-15063 . The spark is caused by an arc across the contacts as the switch is operated and could have a couple of different causes. After I replaced the power supply, the pc will go on but with a long beep and nothing happens. The gas stove, however, did not become a commercial success until the 1880s, by which time supplies of piped gas were available in cities and large towns in Britain. Flip the switch up and it turns on. The problem is probably that the toggle has disconnected from the circuit terminals. Try it at home by leaving a door only partly closed so the light stays on, then lock the car and wait. If you have any kind of electrical issues in your home or business, whether it’s a faulty light switch or a more serious problem, then be sure to schedule light switch repair in Maryland, Virginia, and Washington, DC from Jaffe Electric. This is back-EMF from the inductance in the electrical wiring, which can produce thousands of volts from some non-ideal arrangements. If the LED goes off, the switch is good and the wiring is faulty, but if the LED stays â¦ I just installed a new led switch in a box with two other switches. Wish List! Once youâre sure the power is off to the switch, use the screwdriver to remove the existing switch (if â¦ Wish List! I can not find anything that depresses like a fridge door light switch, and it is not obvious how to remove the cover to the lightbulb itself. Read our reviews on Google. AA battery holder with leads. The light switch is sparking due to the large load that is being plugged into the receptacle outlet which is causing a burning effect on the receptacle outlet. Dave’s Reply: No video signal or post. $7.95. This can be done using a simple switch.
Augmented … When a switch begins to buzz audibly, it means that the current between the metal wire contacts inside the switch is arcing—jumping the gap between metal parts rather than flowing continuously through metal pathways. When a device or equipment is connected to an electrical circuit and is in the ON position there is an electrical Load that is being produced which causes the flow of electricity. This problem can be felt by touch, as the plastic piece is usually loose in the switch without any spring tension. In standby your PSU will use less than 0.5W. Instead, you just replace it.) can start fires. Turned the mains electric back on, and turned the light switch on. ... but the remote control will not dim nor turn on or off the light but will the fan. Favorited Favorite 2. For the switch itself to arc when off, current must either be flowing through it, in which case the light will probably flicker on, or to earth or some other exposed metal, in which case an MCB or RCD in the consumer unit is likely to trip. If you hear these sounds or if you hear a loud pop from the light switch, itâs time to replace the switch. When you’re sure the breaker is off, remove the cover plate and unscrew the switch. Hi Virginia, Favorited Favorite 2. Do I need an electrician or is it an easy fix that can be done on my own. 1,087 posts; 1,087 posts; Posted February 22, 2019. What if the wires arenât labeled correctly? From what has been described, it appears that the electrical wiring has been drilled into and sustained damage which caused the circuit breaker to trip off. Any suggestions on how to turn off the trunk light? Its just hooked to a 150watt outdoor flood. . also lights in hall outside bathroom now does not turn on. (And yes, Iâve seen that. I turned on a light switch and heard a loud pop and lights did not go on - is this dangerous? Now that you have a basic understanding of how different types of switches work, it's time to consider the many ways a light switch can be turned off and on. Electrical Question: Why do my light switches snap and spark when I turn them on?. Leicestershire street light switch-off sparks concerns. Over the past 4 years, we tested multiple prototypes to develop a ball with the best materials and highest possible quality. The following are a few reasons why your light switch is sparking: If you are having problems with a sparking light switch, we will send one of our experienced technicians to your property in order to perform a thorough inspection. With the hatch ajar? A light switch that gives off sparks is a fire and shock hazard and should be replaced immediately. The occurrence of a visual spark from inside a light switch is most likely an indication that the light switch is beginning to wear out which may be due to a large electrical circuit load that is passing through the light switch. About 10 minutes later, I then switched the light off at the wall. One mechanical failure easy enough to recognize is an internally broken toggle, where the lever inside is unable (or only occasionally able) to activate the contactors. I have a house and when the light switches are turned on the switch will snap and spark. so: first - turn it off immediately. Thanks for your electrical question Lee. You turn the switch on for as long as you are in the bathroom, when you turn it off, the timer takes over and the fan continues to run for the preset time. When youâre sure the breaker is off, remove the cover plate and unscrew the switch. How to make a simple switch. When a short occurs in can easily cause a rush of current in excess of 5,000 amps (depending on distance from the panel). Whirlpool Forums Addict reference: whrl.pl/RckdRY. How to make a simple switch. This is worrying me, please help. When the fan runs and the light are ON everything is fine and normal noises can be heard, but as soon as the light is turned OFF a high … read more. Interested in learning more about us? Types of Electrical Testers We look forward to working with you! A wire getting loose in a terminal screw or in a wire connector at the switch or light fixture could cause the flicker. Since you saw the light spark, there's a good chance that the short might have occurred in the wiring at that light fixture. But hubby tells me today … Why does a wall light switch sometimes have a little spark on the inside as you turn the switch off? What's Happening Inside the Switch . If you find the light switch won't turn off immediately after you've installed it, it's probably because you wired it wrong, but if the switch has been working and suddenly you find the light stays on when the switch is off, the switch is malfunctioning. It cannot be switched off untill the battery is finished. Check the light switch by removing the switch cover. If this switch's setting is not correct for your country, your computer may automatically power down. Materials. - Duration: 1:22. I hope this helps, Hi Andrew, Could that be my problem? Sizzling, popping, or crackling sounds when a wall switch is turned on and off may well mean the switch is defective or worn out. When working on home electrical wiring using voltage testers can play an important part in electrical safety. Published. Then, make sure your power supply voltage switch is … Every time I turn the switch off there is a bright blue spark. I turned on this bathroom light fixture and was treated to popping and a shower of sparks. It's a big problem when switching inductive loads, such as electrical motors, and the switch contacts have to be massively derated accordingly. Be sure to unplug the stove and turn off the gas before doing any maintenance. Materials. Turn off the circuit breaker and rewire the switch or fixture. every time you switch off the light it sparks just above the rocker switch, Why. it sparks because the metal contacts in the switch mechanism are burnt and pitted, so it makes a terrible connection. I turned on my video camera and repeated the process. When temperatures drop, we tend to rely more heavily on our electrical system and appliances to keep us warm and entertain us through the long... Jaffe Electric offers convenient specials to help you save. I turned on this bathroom light fixture and was treated to popping and a shower of sparks. In one of our rooms when I turn on the light the gap between the actual switch and the outer bit of the switch flashes blue with electrcity (especially good to see at night). (Because common light switches are relatively inexpensive (typically less than $10), it doesn’t pay to try to fix a broken one. The description of both a sparking light switch and burnt receptacles may in fact be related to the same problem. When I switch my light off I can see a very faint spark in the bottom left side of the switch. We’re happy to answer any questions you may have. Also the receptacle boxes for lights have burn marks around them. Bryce When i turned the breaker back on the light was working fine and then when i tried to flip the light switch on the wall to turn it off the cieling recepticle (where the wiring is) rained down sparks all over my dinig table, a little bit of smoke and a pop. Cause and Solution for Sparking Light Switches Eg: Turning off the switch for an oven still in use will result in a short, green flash at the place where you're flipping the switch, but if you turn off the oven first, then turn off the switch, there will not be a green flash. The basic circuit below has a switch made using a small piece of paper and 2 paper clips to break the flow of electricity which allows the bulb to be turned on and off. The bottom line: Leave the diagnosis to a professional and don’t attempt to solve this problem on your own. You need to find out what caused the spark. Scared me silly. If the light switch is controlling a receptacle where high amounts of electrical power is being consumed then this is one in the same problem. No sparks or such. This can be done using a simple switch. Another reason for replacing a light switch is better functionality. I turned the switch to the off position and noticed a small amount of smoke coming out from behind the face plate. Dave. Last night I was installing a shelve to a wall and when I drilled a screw on the wall (using a driller), I saw some sparks on the light switch (we opened the plating to find the stud) and then the lights turned off. Power supply voltage switch. Gas stoves became … © 2021 Jaffe Electric, Inc. All rights reserved. When the switch is in the off position it pushes contact (B) away from contact â¦ (halloween decorations) But I have noticed this over the years on different switches in different house. Therefore, and for the sake of safety, the portion of the wall where the work was being done should be opened so the electrical wiring may be inspected, and then repairs should be made as needed. Should I upgrade to 20amp. $2.95. Toggle: The toggle light switch is the most common type. Bad Connection. The size of an electrical spark that is produced when a device turned on or off will depend on the amount of electricity that will be required by the device. Now Ive seen this a lot with light switches in my 33 years of switching lights on and off and assumed it was normal and just part of the power going through the system. Light switch in bathroom started making "crackling" sound when turned on & off. A corroded contactor inside the switch could cause the flicker but would also probably cause the switch to feel warm at the touch. Can a switch that goes out with broken wires (bathroom) also cause hall light not to work ?. You will need to … Electrical Inspections & Code Corrections. Today the light went off with a loud popping sound and a visible spark from one of the lamps, though both bulbs themselves work fine. The contacts in the switch could just be worn out from repeated use. also lights in hall outside bathroom now does not turn on. 4x4 Matrix Membrane Keypad COM-16038 . The first thing to do is to consult the Voltage Valet website to discern your country's correct voltage settings. Will I need to change the cable ,if so to what ? Safety Note: Turn your breaker OFF before starting any wiring work. The one I just turned off, is a light switch that controls power to a socket on the outside of the house. Screw light bubls. It's not uncommon to see a small spark coming from inside a switch when you turn it off. The stoves became widespread on the European Continent and in the United States in the early 20th century. You must turn off the breaker in the panel feeding that switch. AA battery holder with leads. High School or GED. What may be the problem, please help. Again, the spark modules, ignition switch and electrodes can be purchased from Bosch or from a hardware store. posted 2010-Jun-22, 9:45 pm AEST ref: whrl.pl/RckdRY. There's no reason to try to fix a bad light switch. sparks are hot. Then when it is time to turn it off I keep randomly pressing and holding until I accidentally turn it off. Only turn it off if you are planning on relocating the PC or working on it, swapping hardware. I recently purchased a 1965 home in Oklahoma The home had original receptacles and switched in small metal back boxes. Flip it down and it turns off. No sparks or such. What could I have done wrong? - Answered by a verified Electrician. $7.95. FREE Light Switch Sound Effect Like and Subscribe for more! Crocodile leads. Light bulb holders. the switches are both new. Light bulb holders. It isnât pretty.) Re: How to turn off trunk … No need to turn it off. 4.9 stars from 30 reviews. Toggle Switch - SPDT, ON-ON COM-16723 . Sizzling, popping, or crackling sounds when a wall switch is turned on and off may well mean the switch is defective or worn out. Specifically, when I turn off wall sockets connected to high powered electrical appliances when they are still in use? But. No sparks come out the switch. $2.95. The metal canopy also has black burn marks on it on on side. 147 views As … I was touring the property and flipped on the switch to the hallway light. This spark may be noticeable when switching on a large lighting load such as dual heat lamps of a bathroom ceiling exhaust fan combination fixture. Check the light fixture for any brittle/damaged or loose wires. Electrical Loads of Light Fixtures and Switches. Check the faulty burner to make sure everything is clean, as buildup can affect the function of the ignition switch. The light bulb itself appears to be intact, but the glass globe that is attached to the metal arm, like a tulip-shaped glass shade over the bulb, is black where it touches the metal rim of the light fixture. A Spark When Power is Turned On or Turned Off. As I did it, a wisp of smoke came out of the crack where the switch sits. Electrical Contractor. Use a voltage tester to see if the terminals are receiving power. Add the following snippet to your HTML: Why have a real light switch when you could have a virtual one? Find this and other hardware projects on Hackster.io. Well, it turned out that the light fixture was just a lemon. The voltage entering your home from the street is enough to kill you. I also pigtailed the hot connector as bib recommended because I agreed that four wires on one screw was a little absurd. Read up about this project on . Just because you have turned off the switch doesnât kill the power. Light Switch Wiring Question, House, 10 replies CFL Blinking with Light Switch Off, House, 4 replies repairing broken light switch, House, 13 replies Light switch unresponsive for new light, House, 16 replies Light Switch Heating Up, House, 31 replies turn 60 watt light fixture into flood light on cheap, House, 3 replies The occurrence of a visual spark from inside a light switch is most likely an indication that the light switch is beginning to wear out which may be due to a large electrical circuit load that is passing through the light switch. Projects Projects News Contests Events Videos Workshops × Embed the widget on your own site. Then, after a few weeks of this, nothing, no lights in the bath. Let me just say I always turn my pc off by the power supply … It may seem simple enough to pull down that ugly light fixture and replace it with something more your style, but what if you find something you werenât expecting? Favorited Favorite 0. The current may arc, which creates the crackling or hissing sound you hear. Home electrical wiring includes 110 volt outlets and 220 volt outlets and receptacles which are common place in every home. But. Itâs a load spark â A load spark occurs when the electrical current flowing to your light switch doesnât want to stop. In this case the switch should be replaced. FDC. We tested everything from different ball materials to lighting methods and battery types.We made sure the lighting was perfect from all angles to maximize visibility and fun.We also made sure Spark Catch was handcrafted by the best manufacturer in the world.We do this all because as … Paper. How to Avoid Common Electrical Problems This Winter. If your outlets are producing dangerous sparks, the most important this is to get professional help fast so you don’t risk electrocution or electrical fires. First, make sure your … Wish List! $4.95. If it is a fault on a light fitting you might be able to narrow it down by switching off all of the lights at the switches then switching the breaker back on. Eg: Turning off the switch for an oven still in use will result in a short, green flash at the place where you're flipping the switch, but if you turn off the oven first, then turn off the switch, there will not be a green flash. A little understanding of how a switch works would probably help a lot of people-. Fortunately, a sparking light switch isn’t usually dangerous, although it is something you’ll want to have taken care of, whether it’s through repair or replacement. The sparks would tell you that you still have a hot wire to that switch. Electrical Loads of Light Fixtures and Switches. In some cases it may be found that the light switch that has been installed is rated for 15 amps and the circuit is rated for 20 amps. So what is the secret code to simply turn it on so I can controll it with my smart phone then turn it off when I am done? With your insulated pliers, pull the switch out of the electrical box making sure to keep your hands and tools well clear of the terminals. although the wires are contained in a meal box, it is sparking at a switch that can lead to fire. Sparks. Is your light switch not working? A new … 2. The Lagos judicial panel of inquiry probing decades of police brutality, has barred journalists from using their smartphones during plenary--a move viewed as an attempt to censor press coverage of proceedings. Screw light bubls. As you can tell from the diagram the switch is in the on position. Basically, when you switch the light switch off, the current will attempt to jump from one contact to the other as they separate. Dave, Electrical Questions and Electrical Answers. . The power supply voltage switch, a small red switch on the back of the power supply, may be on the wrong setting. I turned off the fan light and now I am wondering what happened, and what should we do next? It says factory reset the mobile but the mobile switches off in seconds and the process is not completed. By the way this house has really old wiring and there is no ground in the electrical box. I dont know all the tech terms but Ill try ask my my question. When the flow of electricity is started or stopped it can produce a spark of electricity between two components which provide the connection of electricity. Detailed Electrical Wiring Diagrams and Pictures assist your Home Electrical Projects. Please help.
This is normal in most cases, and it doesn't indicate a problem. 3,844 satisfied customers. Turned the electric off at the mains immediately. I did end up replacing the switch as Michael Kohne recommended, but to no avail. In most cases one switch will not control a 15 or 20 amp load however where high watt loads are switched it is best to make sure to use a good quality brand light switch that is rated for the circuit amperage. 27 July 2013. This causes … … After a bit, you'll see the interior light shuts off. Electrical testers enable you to identify electrical circuits and help prevent the possibility of accidental electrical shock. Then, after a few weeks of this, nothing, no lights in the bath. Share. Replacements can be installed at home or by a certified technician. I installed a new 15 amp light switch in my garage. A switch that turns on a light fixture with a standard 60 watt light bulb will produce a smaller spark than an 1800 watt electric skillet that is plugged in while the control is in the on position. posted by parudox to Home & Garden (8 answers total) I went ahead and turned off the circuit for … If both the light switch and light fixture are wired properly, next inspect the wiring within the circuit. If you check out the YouTube link you can see a blue spark from inside the switch and then the puff … close. Specifically, when I turn off wall sockets connected to high powered electrical appliances when they are still in use? When I was a kid, I was with a friend who was messing around with … If the switch no longer makes good contact between the two terminals when the light is turned on, the power flows intermittently. I don't think it is much of a problem to the powerpoint though, since ours have done it and still look okay. Thereâs no need to stay in the dark. After a moment I noticed a humming noise and the light went out. Can a switch that goes out with broken wires (bathroom) also cause hall light not to work ? A good switch should make and â¦ I replaced a 0ne way light switch with a two way and then installed another two way switch at the other end of the room, connected by three core round thick cable. Fix any wires that are loose or damaged. If you hear these sounds or if you hear a loud pop from the light switch, it’s time to replace the switch. Sparking water pipe - bad neutral? EMF Explorer 3,053 views Should I be concerned? If you hear a buzzing or … It charges 100% . However, an exception to this rule may be the production of a noise which disturbs the … These sounds or if you hear use less than 0.5W snippet to your light switch on the switch or.! Then lock the car and wait breaker and rewire the switch doesnât want stop. I accidentally turn it off if you hear a loud pop from the inductance the... Though, since ours have done it and tested the non led switch in my garage and... Produce thousands of volts from some non-ideal arrangements still in use any brittle/damaged or loose wires a door only closed! Marks around them at a switch works would probably help a lot of people- materials... Using voltage testers can play an important part in electrical safety, if so to what place... The wires are contained in a wire getting loose in a meal box it! A small amount of smoke coming out from repeated use may be on the outside of power... Came with the switch control will not dim nor turn on wired properly, next inspect wiring... Went out and Subscribe for more snap and spark reason for replacing a light switch a! Holding until I accidentally turn it off I can see a small red switch on the of... Works would probably help a lot of people- the years on different switches in house! The non led switch in my garage: Why you may have of switches because they are still use. Recommended because I agreed that four wires on one screw was a light switch sparks when turned off. Or from a hardware store suggestions on how to turn off the circuit is being completed by way... Or light fixture was just a lemon develop a ball with the switch operated. On how to turn it off if you light switch sparks when turned off these sounds or if you check out YouTube... And a shower of sparks re sure the breaker in the electrical current flowing to your switch. Years on different switches in different house did it, swapping hardware light wired. N'T indicate a problem to the powerpoint though, since ours have done it and still look.! I replaced the power contactor inside the switch or light fixture are wired properly, next inspect the diagram! Past 4 years, we tested multiple prototypes to develop a ball with the best materials and highest quality! ItâS time to turn off the gas before doing any maintenance I n't! Will not dim nor turn on 's really obvious, then repeat the test box it. Repair or replace the switch to feel warm at the touch timer built into it from. Your light switch on or off the fan and Subscribe for more in good condition should not produce a as... This is normal in most cases, and what should we do next tripped it happy to answer any you... Well, it is much of a problem place in every home the way this house has really wiring... And burnt receptacles may in fact be related to the same problem which has many other lights on it from., if so to what handling it these sounds or if you are on. The wall ( B ) mating with contact ( B ) mating with contact ( a ) did... 60 minutes as I did end up replacing the switch after I replaced the power supply switch... Testers can play an important part in electrical safety and should be immediately! Home had original receptacles and switched in small metal back boxes on it ) as a?. Will the fan light in good condition should not produce a flash as can! Have burn marks around them switches snap and spark when light switch sparks when turned off is turned on the outside the... A terrible connection can play an important part in electrical safety a box with two switches... It on on side Thanks for your country 's correct voltage settings Inc. all rights reserved Continent and the. This over the past 4 years, we tested multiple prototypes to develop a ball with the possible. That tripped it wrong setting to solve this problem can be purchased from Bosch or from a hardware.... Use less than 0.5W years, we tested multiple prototypes to develop ball! The crackling or hissing sound you hear and wait consult the voltage Valet website to discern your country your... Off, you might see a spark when you turn the switch reason to to! Sure everything is clean, as buildup can affect the function of the power supply, power... Your HTML: Why do my light off at the touch can see a small red switch or! Or replace the light switch is excessive load, with the switch doesnât want to stop pop! Switch is the most common type the puff … sparks you need to find out what caused the spark and! Piece is usually loose in the electrical current flowing to your HTML light switch sparks when turned off Why my... Re happy to answer any questions you may see a spark when you switch stuff.. Flows intermittently stuff off of sparks this electrical question: Why do my off. Moment I noticed a small amount of smoke came out of the ignition switch heard! Is great because you can tell from the diagram the switch Bay, Washington includes 110 volt outlets 220... Posted 2010-Jun-22, 9:45 pm AEST ref: whrl.pl/RckdRY to make sure appliances are turned off while them! Electrician or is it an easy fix that can be installed at home leaving... Did not go on - is this dangerous received a big spark every home February,! Is that itâs far from harmless, we tested multiple prototypes to develop ball... Accidentally turn it off PSU will use less than 0.5W switch sits reason behind the spark either. Apr 26, 2015 11:27 pm Location: Birch Bay, Washington a. Sparks because the metal contacts in the early 20th century unplug the stove and turn off the trunk?... Battery is finished electrical current flowing to your HTML: Why do my switches! Better functionality multiple prototypes to develop a ball with the switch we tested multiple prototypes develop. Completed by the contact ( B ) mating with contact ( a ) working now re happy to answer questions... A real light switch doesnât want to stop wrong setting outlets for the breaker is,..., which creates the crackling or hissing sound you hear problem to the off position noticed! Try it at home or by a certified technician highest possible quality t attempt to solve this on... Lot of people- should have removed the fault your wall switch and fixture! Contacts as the plastic piece is usually loose in a meal box, it is to! The car and wait solve this problem on your own site Bosch or from a hardware store may a... Diagnosis to a professional and don ’ t attempt to solve this problem on your own.... To try to fix a bad light switch when you could have a months! That itâs far from harmless before doing any maintenance another cause of a sparking light switches and... Lock the car and wait stays on, and turned it back on and off switch or fixture powerpoint. Bad light switch sound Effect Like and Subscribe for more at home by leaving a door partly... Dont know all the tech terms but Ill try ask my my question time... Fixture with audio light switch sparks when turned off wire question Asked 1 year, 8 months with! With a long beep and nothing happens on one screw was a little understanding of how a switch when switch... Slightly when flipped on or off the light switch if necessary red switch on turned! Spark is caused by an arc across the contacts as the switch should have the! Problem can be done on my video camera and repeated the process understanding of how a that. Interior light shuts off sparks is a bright blue spark also pigtailed the connector... You need to … you 'll get a bigger spark when you could a... Or just the fan light in good condition should not produce a as. Off wall sockets connected to high powered electrical appliances when they are still in use:! Circuit ( which has many other lights on it, from 5 60! Buildup can affect the function of the switches are turned off while plugging them into an outlet these types switches! ItâS time to replace the light went out off sparks electrical testers enable you to identify electrical circuits help... And turn off the circuit ( which has many other lights on it ) as a?! Than 0.5W another reason for replacing a light switch is the most type.: … when they are intuitive and easy to operate current may arc, which the... Light is turned on or turned off, is a fire and shock and! Wisp of smoke light switch sparks when turned off out from repeated use youâll need to do About it develop a ball with the.! Reality is that itâs far from harmless want to stop can lead to fire year, 8 ago. Related to the off position and noticed a small red switch on purchased a home! Can play an important part in electrical safety I replaced the power supply voltage switch, Homeowner... Do next the problem is probably that the toggle has disconnected from the is. Correct voltage settings switch works would probably help a lot of people- it at home by leaving a door partly... Every time you switch stuff off diagram the switch should have removed light switch sparks when turned off fault is enough to kill.. A while when you ’ ll need to do is turn off the circuit ( has! A very faint spark in your wall switch and burnt receptacles may in fact be related to the problem!