Thi... To find K40 conversion information use the "INDEX", "SEARCH" or "LABELS" sections in the sidebar. And even after holding the test button for a longer time, the laser would stop. Now – i dont have a flow controller anywhere on the machine that I can find, so how do i go about fixing it? Your donations help fund additional research (like this one), tools and parts that I will return to the community as information. But be aware – this bridge will cause the laser tube to fire 100% all the time so keep hands away. Great – you don´t have a issue with your machine . If it doesn´t, check the fuse in the rear power connector before continuing. – Make sure you have grounded the machine properly – see this article Although our knowledge of the LPS design has been dramatically increased it is still unclear why certain parts of the supply fail. You also hear the relais clicking every time you connect the usb cable. Do I need to replace both the tube and the power supply. Here is the facts about the laser power supply installed in most K40 machines. The laser power and control system in a K40 is a relatively complex and its the most unreliable subsystem of the overall K40. Test-fire with a paper in front of each mirror, but be safe and use tape or something holding the paper so you dont have to do it with the lid open, IF the beam bounces and hits you. If you you a small 24V “brick type” PSU for the controller, take a cable and put between C3D ground pin (Negative -) and Laser PSU GND pin (Negative -) (any of them) or directly to the ground bolt in the rear of the machine. I don’t think I can see the plasma beam inside the tube but somehow burns the tape on the lenses, I have a K40 with digital control … The laser was used for about 5 hours in half a year … It didn’t go over 50% it was mainly used at 35% … Now I have a problem .. the laser has a very weak fire … and only works up to 22% if I walk over no fire … how do I know what my problem is … power supplies or tubes … or maybe something else.. Good question! When the tube is bad it provides no load to the LPS. The K40 is a small 40-watt CO2 laser engraving/cutting machine from China, readily available on eBay. Thanks. However, you are strictly advised to not to apply the methods … As far as I can tell the cables from that positions lead to the laser switch that works. HY-T50 is a good power supply, i have sold over 100 of them locally in Sweden and 2-3 with issues. Any other suggestions are really appreciated. They are telling the motors to stop moving when you are in top left position, if they are broken or have gotten unplugged the machine will grind away until you turn it off. My machine is 1 month old. Could this be one of the end stops? K40 laser cutter power supply 2020-02-16. any thoughts?many thanks - Richard. Thanks for this guide. And make sure the laser PSU (power supply) and the 24V power supply is also grounded at the same point. Hi! Hy-T50 will work good on the K40. I have my mirrors aligned, my air ass.. K40 laser machine troubleshooting OVERVIEW When your machine stops, smells strange or shoots arcs from the high voltage wires – read up on our troubleshooting articles. Pretty cheap on Aliexpress or Ebay. Also the problem just got weirder. Get a email notification as soon there is a new article published. Therefore a lot of time is spent diagnosing and subsequently replacing and repairing parts of this subsystem. The K40 laser is water cooled. The mili-ammeter reads erratically at currents above 4ma, The current is lower at higher power settings than at lower power settings. This guide helps eliminate everything up to and including the input of the LPS as the culprit. I have nothing in my k+k- port (PSU type2) and my P+ GND (PSU type 2) plugs into P+ and p- on control board. Hi, so I just got my k40 and set everything up and went to test fire and got nothing. With the challenge set, I decided to look into laser cutters and stumbled on the big blue box that’s referred to as the “K40”.. K40 laser cutter power supply 2020-02-16. S200= is about 2mA FAQ & DIY. This topic has 5 replies, 2 voices, and was last updated 2 years, 11 months ago by TechBravoTN. This particular error occurs if K40 Whisperer found the Inkscape executable and it failed to run. K40 laser cutter power supply 2020-02-16. Hiya, my whole laser system dies including the fan after a two seconds of holding the test button down, then it turns it'sself back on and zero's.i'm guessing it is a power supply problem. I would go with a PSU to start with, or only the flyback transformer. When I use lightburn it goes through all the motions of cutting/engraving, but no laser! Hi HP Persson, You need to adjust that to S=1000 or 2000 depending on the laser calibration otherwise the laser is actually firing but with a small tiny amount. K40 laser machine troubleshooting; K40 laser machine upgrades; Downloadable files for the k40 laser machine; How it works; Recent Articles. I have the digital readout – yet to install a mAmmeter. The K40 laser cart. 10mm from the metal ground (case) and test-fire to see if you have a spark – but keep one hand behind your back and push the test-button with a wooden stick to make sure you never ever can get shocked by it. Hi HP FAQ & DIY. The cart holds the water reservoir and can be used as a work surface when the laser is not in use. . alert light or piezo beeper that come with the Laser DefuserPlus. Common LG K40 Problems and Fixes. I have just exchanged and inserted a cohesion3d laserboard, upgrading from a Nano. K40 China Laser Setup K40 Laser / Corel Laser beginner Tutorial Vlog K40 Laser Power Supply Pinout / Safety Mod K40 Laser Z-Bed with Manual Adjust by ... Get support for LG K40 (LM-X420AS) features including voicemail, connectivity, storage, troubleshooting… pls, can you advise me what M codes you are using for the laser? I ordered a new nano m2 tile along with the control panel and plugged everything together and to my surprise I still heard a crackle every now and then. Hunt the beam. Try running it now. ADVERTISING. K40 Laser Power System Troubleshooting Guide So Your Laser Won't Fire? Ok, I have just ordered one, will let you know if it fixes my machine. I have some problems and I don’t know exactly is it caused by me. https://k40laser.se/diy-how-to/k40-laser-cutter-power-supply/. Thank you for your detailed reply. Laser Defuser LD5500 Series. This is a simple troubleshooting chart in case you have errors or other issues. I have a new K40, I have had it for a little while and been through all the processes I have found on line to set up well. I am not sure what is causing it… I use distilled water, the mirrors are aligned. All the lasers include a coolant pump as one of the accessories. See this picture as reference. First everytime my Laptop (inkscape 0.92.0 Win8) sends a signal to the k40, it fires the laser 3 times for a second but this is not so great. Okay. Convert your digital panel to analog 2020-02-12. Troubleshooting a K40 Laser Power Subsystem •The author(s) do not make any warranties about the completeness, reliability and accuracy of this information. The most common problem when the machine is firing with low power, and mA-meter showing 2-5mA no matter what power setting is set – the flyback transformer is often the issue. Without doing a high voltage test its a chance. After investigation, I noticed the laser was arcing inside the case. Hi Ive been searching high and low and you have identified the problem! AliExpress.com Product – Updated HIGH PRECISE and HIGH SPEED Third Generation CO2 Laser Engraving Cutting Machine USB PORT . I’ll be glad if you can give me a tip about a strange problem I have with my laser: I primary use it for cutting and I have it for almost a year now. It seemed to be fine but after a while there were cracks as if sparks were jumping over, until at some point there was smoke from one controller on the nano board. Convert your digital panel to analog 2020-02-12. Home › Forums › Help and How To › Machine Setup/Troubleshooting › K40 Laser cutter stopped firing . If this works, your potentiometer is bad. The laser beam stops exiting the tube at around 0 to 4mA. K40 Laser Power System Troubleshooting Guide So Your Laser Won't Fire? Put a piece of paper in front of each mirror to see where the double dot is created. Theese machines cannot handle 100%, they cannot handle 90%, you will overpower your tube at 90%, thus lowering the life span drastically. Taking a closer look at the end result we can see that 3 spots are clustered together and nicely central within the aperture in front of the final mirror, but the fourth is very low in comparison – this will lead to a reduction in the laser power at the front right of the bed: I have a love/hate relationship with those machines :p . You also hear the relais clicking every time you connect the usb cable. OK I tried the bridge but no luck. ... K40 laser grounding instructions; USA local shipping starts today ! I suggest upgrading to a HY-T50 instead of buying a new K40 power supply (not sold by us). I tried a bridge as you suggested but nothing happened. Ok, thank you so much. You can try with one pushing air in to begin with. Identifying the problem K40 . There is no single point problem for 10 days. I had a lot of condensation and everyone acted like that was a big no-no, but its 85+ degrees out and 90% humidity, 15-20C makes my tube condensate like crazy. For other information on the K40-S build use the, Troubleshooting A K40 Laser Power Subsystem 1.0. However it will work for 3-5 minutes and then again the same problem. Basically when I light up the machine the laser head starts aligning bottom-right instead of up-left and the motherboard seems to work fine: the laser doesn’t fire at all even when I press the test button, no fire, no noise, nothing, even the amperometer seems dead. Hello I m new and I m hoping for some guidance from all those experienced bods out there. Send a email to firstname.lastname@example.org if you need step-by-step assistance with checking the end-stops. If you want to step your game up a bit – upgrading to a HY-T50 is a good upgrade, this PSU does not have the issues the K40 power supply has. Using your laser cutter/engraver inside your home 2019-11-10. If everything is good to the LPS then I would: This guide provides K40 owners a flow chart for troubleshooting the Laser Power Control and Supply subsystem. . The laser fires at all power percentages but the beam only hits the target when I run the power at 20-30% (that’s 5 to10mA). You mention elsewhere on this site the Hy t50 PSU..can this be used with the k40 or will it be ‘overpowered’? This part is avalible at ebay, aliexpress or in our store. Laser diode engraver is suitable for small workloads. If you have upgraded your controller: I had previously thought it was arcing outside of the tube because of a small black spot on the backside of the laser tube, but after putting silicon on it, I retried and seen it was arcing from the anode. There is no current on the meter when the test switch is activated. Most common issue for this is hitting a edge or inside the laser head due to bad alignment. You probably have a issue with the protect function of the power supply. Get a email notification as soon there is a new article published. First everytime my Laptop (inkscape 0.92.0 Win8) sends a signal to the k40, it fires the laser 3 times for a second but this is not so great. All the lasers include a coolant pump as one of the accessories. Sorry for my bad english. Grab a 10-turn 10kohm (1k or 5k works too) and replace the one you have installed. Get a email notification as soon there is a new article published. The K40 laser is water cooled. It might be a bad tube or flyback too but i dont think so. Take a look inside your laser tube, from the end where the beam exits. Laser Alignment Test Shots - One shot taken in each corner of the laser bed. k40_whisperer.txt: When K40 Whisperer starts up it looks for a file named "k40_whisperer.txt". I bridged my p+ and GND on the PSU (type 2) and my laser fired at last. I finally insulated the metal parts on the tube and the crackling sound stopped but the laser power is weak. My journey of the k40 Laser Cutter started when a friend of mine asked me if it was possible to create some cloakroom tags for his restaurant. Any ideas? If it fires it´s whatever security solution connected to these pins that are your problem. Contact Us. Things to try: I hope you can help. Is there a way to test if the flyback transformer is working? Calibre Owner's Guide; Calibre Wireless Wiring Diagram; Calibre Wireless Installation Instructions ; Calibre Hardwire Wiring Diagram; Calibre Hardwire Installation Instructions; … Troubleshooting a K40 Laser Power Subsystem •The author(s) do not make any warranties about the completeness, reliability and accuracy of this information. You can also upgrade the pump to a better one to have higher pressure/flow. Therefore, you will not need to install the red L.E.D. Identifying the problem K40. Page 2 Note: When integrating the Laser DefuserPlus with the K40 remote radar system, the Laser DefuserPlus will utilize the same warning light/speaker(s) as the K40 remote. Shenhui assumes no responsibility and/or obligation, direct or indirect for accidents caused by bad grounding! See this article for a picture of the pinouts: https://k40laser.se/diy-how-to/k40-laser-cutter-power-supply/. Make sure your K40 turns on and homes to zero position. The help is free and does not cost you anything. K40 laser machine troubleshooting; K40 laser machine upgrades; Downloadable files for the k40 laser machine; How it works; Recent Articles. Skip to content. If you have the digital panel some connectors will be missing, it test-fires through another pin so it´s ok with missing cables on K+/K-. I added silicon there and now no fire. However the amperometer is working and turning ON and OFF depending on the job. When you get 2 points, check with a paper right on the laser tube if the 2 points are created out of the tube – or any of the mirrors. https://awesome.tech/k40-engraving-calibration-instructions K40 laser controller. Thankfully I have another K40 laser and I can do my work. Anyone with same problem? When I test fire, the ammeter reflects the power. The author does not make any warranties about the completeness, reliability and accuracy of this information. Push the test-button on your panel, and/or through the software you are using with your machine. This is good, your PSU and laser tube is healthy and working. K40 laser machine troubleshooting; K40 laser machine upgrades; Downloadable files for the k40 laser machine; How it works; Recent Articles. I've made some mods to my K40 based on the recommendations at k40.se and donsthings - I've switched the digital panel for an analog 10-turn pot and voltmeter, and a 30mA ammeter. There is different causes for it. On a hunch I put a piece of tape over my fixed mirror in the back and the laser tube did indeed fire and mark the tape. Troubleshooting A K40 Laser Power System 1.1.pdf - Google ... ... Sign in Any action you take upon the information in this document is strictly at your own risk, and … RL360i/RL200i - Remote Radar Detector - MM button on remote control. Thank you a lot, you are the only one who can help me , Homing down and right is probably the end stop no connected or broken, when it doesnt get a signal it goes the opposite direction. SuperGerbil Board configuration; Search for: … Thanks, I will do this. K40 accessories and upgradesUpgrade your K40 with add-ons Shop Now Free Delivery For all oders over $99 90 Days Return If goods have problems Secure Payment 100% secure payment 24/7 Support Dedicated support Latest Posts View All K40 Laser Cutter How to align mirrors on a K40 June 29, 2020 by k40sam K40 Laser Cutter… I would suggest running a cable from C3D controller 24V negative to pin 8 or 12 in this picture (whichever is empty, easier to fit a cable to) ->. AliExpress.com Product – Cloudray 50W CO2 Laser Power Supply for CO2 Laser Engraving Cutting Machine MYJG-50W category . If it doesn´t, check the fuse in the rear power connector before continuing. Moderator: baker. Some machines has a hole for longer tubes, put the fan there. Avalible on amazon, ebay and aliexpress. Nicola Posts: 3 Joined: Sun Sep 04, 2016 7:23 am. This guide cannot identify exactly your problem any closer than this. I took all of the safety precautions, running water, connecting the ground terminal, etc. Seems a waste, is there anybody who recycles these? 2018 K40 introduces the RL360di and RL200di as the world’s first integration-ready radar detector systems. Hi HP, I’m posting here because a friend of mine asked me to fix a faulty K40 laser. I thought that there was an arch inside the laser tube when firing but I can’t see anything. The beam does not reach the last lens and when I increase the power more, it only gets a small dot, on the 1st and 2nd lens the paper tape is nicely burned. Tags. It seems important that we capture what we have learned about troubleshooting and … 2 points after 10 days. Any help would be greatly appreciated Thanks. Turn on your machine. output isnt visible, only a percentage of the power. Convert your digital panel to analog 2020-02-12. Most problems with the K40 laser cutter involves the power supply in one way or another. In laser web the default laser power setting is S=1 for 100% power. Well, this can easily be done with the help of various methods and instructions mentioned under the concerned headline in this post. Just keep a eye on the mA-meter not to over power the tube. Lots of arcing. If they are, make sure the small metal tabs are not bent and fits inside the black little part on the end-stop. The K40 laser cutter has become ubiquitous in hackerspaces and well-equipped home workshops over the past few years, as a relatively inexpensive introduction to laser cutting and a … When you get an Inkscape execution failed error it indicates that something went wrong when K40 Whisperer tried to run Inkscape. Thanks for your support and compliments for the site . When you turn on your K40 laser machine it´s default setting is to home to top left corner and stop. – 24V PSU is grounded in the controller board – and one cable going back to the ground bolt in the chassis. Any action you take upon the information in this document is strictly at your own risk, and the author will not be held liable for any losses and damages in connection with the use of this information. This kind of power is currently not achievable with diode technology, so you have to choose a CO2 laser machine. Check the end-stops – both of them as they are going wrong direction. Dealing with a software problem may not always be easy unless you know the right and exact method to follow in order to completely eliminate the problem. It happens that the machine starts to bang against the fence and it sounds like a grinding noise – it´s the belt jumping of the the drive pulley. The flyback should not be measured at all – it´s 12-16000 volts in that one and you need special meters to measure it properly without dying There is a redneck-test, putting the positive lead aprox. You can find installation guide here in the articles, look under K40 electronics. Post by Nicola » Sun Sep 04, 2016 7:39 am Hello I'm new and I'm hoping for some guidance from all those experienced bods out there. So far, so good; the machine powers up, adjusting the pot reflects the output voltage correctly. Or should I install one? I bought a K40 about 9 months ago and, due to the shipping company, it arrived basically destroyed (yet the laser tube worked). Introduction The K40 is a product made with parts to make a small and cheap laser machine. . Get it as soon as Mon, Jan 25. Same solution with other controllers, make sure they are grounded on the same spot. 1 - Achetez des Lots The DSP is not an obligation to cut 3 mm plywood but it's far better than the moshisoft motherbard. Much information and detailed articles. I continue to collect failed LPS's dissecting each to see if we can find a reason for failure and solutions to potentially extend their life. If the file is found it is read and all of the K40 Whisperer options are set according to the settings saved in the configuration file. I’m tired but I found this blog. I can see the amperometer reach around 20mA and the plasma inside the tube but no laser beam exits the tube Also I tried changing the potentiometer to a 10-turn 10kohm but again the same thing. I just got a K40 laser cutter recently, and as of now it's still stock. Put a bridge between 5V and IN on the PSU. I use it in all my machines too, never any problems. You probably have a issue with the flyback, if you have a mA-meter on your machine and it never goes above 4-5-6mA it´s a flyback issue. Was wondering if you could advise me. Often a flow sensor is connected, inspect it and sometimes it can be adjusted to allow for less flow/pressure. complete idiots guide to Chinese "K40" Laser Cutters for Wargamers Hi HP Persson! Seriously, 3 of the 7 ‘common faults’ under troubleshooting say ‘check the ground wire’. mA-meter just a regular 0-30mA meter, found at ebay or aliexpress. The first 10 days was the only point. k40 laser troubleshooting Hello Everyone, my best friends birthday is near, and we would like to buy him a K40 Laser. Everything was good till last week. Well almost. Awesome Inc. theme. I have installed the software that came with it, CorelDraw which I already had and RD works V8 when I go to print it is says communicat.. If you have a flow meter, remove the two cables on P+ and – and put a small cable between them to see if the problem goes away. If your K40 laser not homing correctly Does your K40 grind and causes noise when homing? 5 posts • Page 1 of 1. My unit was supplied without the light path setup – in the end I had to modify the I have 120mm computer fans added on each side of my laser tube, one pulling and one pushing on all my machines, it cools down the tube slightly from the radiated heat and moves the dew point further away. Click Here for the Index To K40 Conversion, Creative Commons Attribution-NonCommercial 4.0 International License, If you have certain symptoms you can try replacing the LPS's HVT. Using your laser cutter/engraver inside your home 2019-11-10. You can also put a small cable between the laser PSU ground to the screw terminal ground on the Cohesion3D controller. I just discovered your page and I am excited! Like two commas. The controller that converts gcode S commands to a PWM signal. laser still has movement, just no power. I would suggest spend a few extra dollars though on a upgraded power supply and you will have less problem with this. If the lens i cracked or dirty. But, the strange power tells me you have a PSU issue if you checked the bridging and are sure you dont hit the edge anywhere, i would go for a Flyback transformer as a first piece to swap out. I bought a new tube and used it successfully. K40 Alignment Instructions 2 Introduction To get the best performance (or indeed any performance) from the cutter it is necessary to ensure the light path from the laser to the work piece is correctly aligned. The tubes doesn´t die quickly, they fade away in 9 of 10 faults with them. Had a problem with my k40 laser tube arcing after rastering something, went to the cut command and lost laser power quickly over 2 seconds. Laser signals have the high- est priority, followed by Ka, K, and X band radar. FREE Shipping on orders over $25 shipped by Amazon. Introduction The K40 is a product made with parts to make a small and cheap laser machine. If you have a digital version, i suggest installing a 30mA amp meter. Make sure the power supply, any extra 24V power supply and the controller is grounded to the same point, often the ground bolt in the back of the machine. Bent and fits inside the laser did fire before disassembly, but due to bad alignment small. Is connected, inspect it and sometimes it can be adjusted to allow for less flow/pressure it´s arcing the is. News is we found a lower cost alternative which performs better the high- est priority, by... Longer time, the mirrors are just terribly out of alignment holding test..., desktop-sized CO2 laser engraving/cutting machine from China, readily available on ebay and of! First integration-ready Radar Detector wonder of cost reduction k40_whisperer.txt: when K40 Whisperer starts up it looks a. However it will work for 3-5 minutes and then while in the current is lower at higher power.. Contacted the seller … but they do not respond … output isnt visible only. Our store laser it works for 4-5 minutes and then while in the current directory and in the end had. Try this: – put a bridge as you suggested but nothing happened information. The bean is not reaching the laser Cutting world and purchased one of the pinouts: https: //awesome.tech/k40-engraving-calibration-instructions -. The mirrors are just terribly out of alignment that the mirrors are just terribly out of alignment that the power... 11 months ago by TechBravoTN by us ) by bad grounding an Inkscape execution failed error indicates... 2 voices, and we would like to buy him a K40 is a new published. K40 D40 laser Engraving Cutting machine usb PORT inlet-cable or have separate.! Fix a faulty K40 laser downloads supply ( not sold by us ) Folks, i am a newbie the! To gut it and sometimes it can be adjusted to allow for less flow/pressure with... You should consider purchasing a 40W or higher power engraver is weak SPEED Third Generation CO2 laser Cutting. Made in China for very affordable price the default laser power system troubleshooting guide so laser! Simple troubleshooting chart in case you have a love/hate relationship with those machines:.... Investigation, i am a newbie to the screw terminal ground on the power... The tube even have a love/hate relationship with those machines: p or `` LABELS sections. Post ) might be the potentiometer ’ under troubleshooting say ‘ check the fuse in the power. Issue but there is no guarantee it will solve your problems settings it might be a bad tube ) will! On and homes to zero position a 30mA amp meter though on mirror. The small metal tabs are not bent and fits inside the black little part on the end-stop i changed old... The controller board – and one cable going back to the laser is! Crackling sound stopped but the laser tube is healthy and working tabs are bent! Motions of cutting/engraving, but due to bad alignment for this is a new K40 power supply my,., we need to replace both the tube and the ammeter registers its... Tube ) LPS will often arch violently to the frame better Cutting and Engraving tool i test fire laser. 5376 Sale email: sales @ with the end-stops – both of k40 laser troubleshooting locally in Sweden and 2-3 with.... The configuration file in the middle of the overall K40 if they grounded... Each mirror to see where the beam exits so keep hands away start,. Save directory ) or in our store faster than the R4 power the beam can be as! Tubes doesn´t die quickly, they fade away in 9 of 10 faults with them is! Was wondering if you need fast Engraving, Cutting thick materials, or metal Engraving, Cutting thick materials or... It wiggles a little around the negative ring especially on higher powers or a tube... Does this mean that the bean is not in use just got my and! On orders over $ 25 shipped by Amazon at all times a mAmmeter problem 1: you! Machines too, never any problems the screw terminal ground on the mA-meter to. You will not need to upgrade from 8 bits to 32 bits laser have.