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Two Brand New But Faulty Plasma Cutters - Can I Fix Them?

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A Viewer called Julian bought a faulty plasma cutter from eBay and it turned out to be faulty, the seller sent him another, which also had the same fault. He asked me if I could have a look at them and possibly repair one or both. Let's have a look and see if we can diagnose the problem and hopefully get them working for him!
I'm not an expert, but I do enjoy trying to fix things.
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#electronics #electronicsrepair #repair
Plasmargon Plasma cutter repair
Plasmargon E04
Plasmargon E02
Plasmargon E01
Plasmargon E04 Error

Опубликовано:

6 сен 2024

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Комментарии : 441

@fireguy_81 Месяц назад

0:50 I like how the email says the fault code isn’t in the “destruction manual” and not the “instruction manual.” 😂

@BuyitFixit Месяц назад

😂😂😂yes I've heard the saying before 👍

@ianrichardson3228 21 день назад

We have always called it that 🤡

@BjornV78 Месяц назад

As a tip when dealing with Plasma cutters. The compressed air is not only for cutting the metal, but also for cooling the torch. During use, the arc gets up to 20000 to 30000 °C (36032 to 54032 °F). Using no air, or shutting down the cutter straight after use can cause the torch to melt.

@BuyitFixit Месяц назад

Thanks for the tip 👍(not to have a melted one 😂😂)

@BjornV78 Месяц назад

@@BuyitFixit , i have seen it happen when i worked as a welder. That guy didn't make that mistake twice when the boss was furious 😂

@ianrichardson3228 21 день назад

I bought the most expensive 3 function 180A welder/cutter I could find in China, hoping for reliability, they even showed me the factory. It gave an overheat warning after several days and less than 1kg of rods. As I despise anything electrical I immediately ripped the cover off to find 2 fried caps, on the top board, which is installed first. Electrical market lady identified them as cheap 230V items, and supplied 400V ones for 30P each. I soldered them to the original wires protruding from the board, supported them with aluminum as a heatsink, fastened by cable tie. That was 2015. 😊

@BuyitFixit 21 день назад

Nice 👍

@Etiennevisvang Месяц назад

What an excellent insight into the workings of a plasma. Miine works fine but watching you working, imparts so much knowledge to know nothings like me. Thank you.

@BuyitFixit Месяц назад

Thanks 👍

@OgOssman Месяц назад

Yeah one things forsure, plasma cutters are notorious for failing not long after purchase. I had one a while back, used it for like an hour, and then it stopped working, was told, too much moisture in the air compressor, even though it had dryer on the line.

@bobbygeorge77 Месяц назад

You've got a good brain Mick. Great to see the process on investigation and repair. Keep at it!

@BuyitFixit Месяц назад

Cheers mate 👍

@blder56 Месяц назад

Amen!!! @@BuyitFixit

@darrenwardell3079 Месяц назад

You never cease to amaze me with your ability and skill to look at something from a different angle. Plus knowing that something doesn't always leave the factory correctly built in the first place. I also really like it when you use items that you have previously fixed in your vids. Hats off to you once again.

@BuyitFixit Месяц назад

Thanks Darren 👍

@smca7271 Месяц назад

Its a shame,they invest all that technology and effort and then fail on little details...ive had a cheap cut 40 for 15yrs and its still going,but initially it blew the main voltage reg to control boards, spark gap was incorrect, and blew the fets up,after replacing with more robust parts its been a great plasma cutter...the cost t to do it right first time would not have been much....shame they cheap out sometimes.

@BuyitFixit Месяц назад

Nice, Good job on fixing yours 👍

@skysurferuk Месяц назад

I picked up a Lidl plasma, when they were in stock. So far, very impressed, but the supplied nozzles are too big. Dropping to a 0.3mm nozzle makes it work so much better. Always wondered what was inside of these little machines. Many thanks for this excellent repair. 👍

@BuyitFixit Месяц назад

Cheers 👍

@paulvale2985 Месяц назад

Thinking outside the box to a genius level again. Great work Mick.

@BuyitFixit Месяц назад

Cheers Paul 👍

@TheElectronicDilettante Месяц назад

As always… Great video, showcasing expert diagnostic and repair skills and technique. If you’re looking to learn how to fix electronics, start here. Go to video #1, press play, and pay attention. Diagnosing faults and failures, especially in unfamiliar systems, is challenging. While there are curricula available, it ultimately comes down to consistently asking if/then statements and maintaining a methodical approach. Always ask yourself “Why/What/How?” when you identify an issue. For example, if a radio won’t turn on and you find a blown fuse, replacing it might fix the problem temporarily. But without asking why the fuse blew, you might miss a power wire shorting to the ground when in motion. The host of this channel does an excellent job explaining these concepts, making it easy to follow and learn. Thanks for sharing your experience and wisdom with us!

@BuyitFixit Месяц назад

Cheers mate 👍

@garypoplin4599 Месяц назад

32:06 - 37:11 - After installing the 10kR _on the sensor side_ of that connector , the unit will still throw the E04 error if it is actually unplugged. You’re on the right track!

@BuyitFixit Месяц назад

See follow up video, and pinned comment under it (as I made a slight modification again since recording the follow up video). Unit now works perfectly and will show E04 if it's unplugged (resistors are still on the PCB side) 😉👍

@georgestephens2593 Месяц назад

Welcome to Mick's troubleshooting master class.

@BuyitFixit Месяц назад

😂😉😉👍

@MrSoundman1955 25 дней назад

What a fantastic diagnosis! Ideally I suppose a new correct sensor would be fitted, but very well spotted sir!

@BuyitFixit 25 дней назад

Thanks 👍I'm not sure if there is such a "correct sensor" or if there is another design fault with these, as most NTCs seem to follow a very similar temperature curve path. I did a follow up video since making this (with thermal camera and heat gun / freezer spray) to show that it all worked, apart from if the sensor failed or became disconnected. After making that video I then pinned a comment under the new video as I added another 2K of resistance to my original mod and now everything works perfect including if the sensor fails or becomes disconnected 🙂

@terrym1065 Месяц назад

Recovering from Aortic Aneurysm surgery, very invasive. Saw video, well done.

@BuyitFixit Месяц назад

Sorry to hear Terry, I hope everything went well and wish you a speedy recovery! I've just finished recording a follow up video as people were saying it won't work and you just bypassed the protection etc... stay tuned!

@lordjaashin Месяц назад

Sorry to hear. May Allah grant you speedy recovery

@fredwooding599 Месяц назад

Not so great quality control, but you made is all good again. God job Mick. I just can't wait to get your bill for the intercom. It should be a "Doozy" lol

@BuyitFixit Месяц назад

I wasn't going to charge... but if you insist 😂😂😂😂

@robertmjr7996 Месяц назад

Exactly what I needed on a Saturday Afternoon. Well done .

@BuyitFixit Месяц назад

Cheers 👍

@plasmaDave Месяц назад

Well done getting those going. As for pretty much anything you pay for what you get. I run a Hypertherm, which is expensive but worth it if your a business. Duty cycle is the big restrictor on the cheap machines.

@BuyitFixit Месяц назад

Thanks 👍Yes, heard of Hypertherm they are supposed to be the best 👍

@thedankduck0218 Месяц назад

Great video, almost felt like a plot twist when you discovered the problem 👍

@BuyitFixit Месяц назад

Thanks 👍. Follow up video out soon!

@briancalvey4997 Месяц назад

impressive skills of deduction on display there 👍

@BuyitFixit Месяц назад

Thanks 👍

@geoffburnham3967 12 дней назад

I'm a little surprised that you soldered the resisters to the circuit board and not the sensor itself. That way the unplugged error would still work and have one less modification to the board. First of your videos ive watched. I did enjoy it. You have a new subscriber. 😀

@BuyitFixit 11 дней назад

Thanks 👍That issue has now been fixed too, and the resistors are still on the circuit board side. I did a follow up video to this one (on the channel), and then pinned a comment under it as I made a slight alteration, so now everything works perfectly including if the sensor goes open circuit or becomes unplugged.

@radoczi94 Месяц назад

Nice repairs, Mick! I'm really getting hooked to this channel. Some of these chinese welders really are rubbish. I have worked at an importer and we were looking for a new manufacturer. The sample unit they sent us was fine, but the production units had serious QC problems. A few units even had rectified mains wires pinched under a screw. I'm sure you can imagine the sparks, sudden darkness and the slight discoloration of the underpants.

@BuyitFixit Месяц назад

😂😂😂😂Thanks mate, yes I can imagine. I've just finished recording a follow up video to this because of some comments.. stay tuned!

@johnmolnar2957 23 дня назад

Good detective work . My Buddy that's retired from electronics repair ( he still dabbles) often says, a lot of times faults are obvious, a lot of times they're not. you zeroed in very quickly to some of the faults for sure

@BuyitFixit 22 дня назад

Thanks 👍Yes, sometimes no so quickly like on the Kenwood mixer recently and the coffee maker I looked at 🙂

@gregorynichols9022 28 дней назад

Hi buy it fix it. Nothing like a cct diagram with values fault finding. Maybe the Disributor in your country might have a techy you could talk too as well. Not that you need one!!!! Well done mate..

@BuyitFixit 28 дней назад

Thanks 👍I did a follow up video on this (with thermal camera) and then I made a very slight adjustment in the pinned comment below the other video. The unit now works perfectly including if the sensor is unplugged or fails 🙂

@positivefix Месяц назад

I like to use liquid PTFE instead of thread tape, works a treat.

@BuyitFixit Месяц назад

Interesting. Thanks for the tip 👍

@billdoodson4232 Месяц назад

I use Loctite 55 Thread Sealing Cord. It's a sort of PTFE string that is really easy to dispense and apply. Since starting to use it, I haven't had any leaking fittings that I know of in the last 15 odd years.

@joelkist6493 Месяц назад

You sort the problems out pretty fast, nice.

@BuyitFixit Месяц назад

Thanks 👍🙂

@philpowell6915 Месяц назад

Just love how you work these issues out then resolve them, complete with full explanation for us mere mortals 👍

@BuyitFixit Месяц назад

Thanks 👍🙂

@sparky5543 29 дней назад

You, Sir, are quite amazing! I would have totally missed the temp sensor being the wrong one.. I did assume, being the wrong connector, the factory just found something else to stick in there, and didn't know the difference :) You have a new subscriber!! :)

@BuyitFixit 28 дней назад

Thank you, and welcome aboard 👍 Check out the FLIR camera I repaired or the solar inverter video (which I then needed a password from the manufacturer which they wouldn't give me!) or the AverMedia Live Gamer capture card I looked at.

@GadgetUK164 Месяц назад

Awesome diagnose and fix there! 10/10

@BuyitFixit Месяц назад

Cheers mate 👍

@blder56 Месяц назад

@BuyitFixit Excellent response, Mick

@johnj4860 Месяц назад

This is something I'd like to have seen checked out by Big Clive. He's a genuine electronics expert.

@BuyitFixit Месяц назад

I've done a follow up video on this, which should be out tomorrow.

@andymouse Месяц назад

BC ? Nah he's a hack Mr It is the real deal.

@Charlie_Crown Месяц назад

@@andymouse Big Clive is a hack, you sure? 🤔 ...nah, Big Clive is far from being a hack

@skysurferuk Месяц назад

@@BuyitFixit Looking forward tuit! 👍

@paulstaf Месяц назад

YOU SHOULD have soldered the resistors onto the wire of the temp sensor so that if it ever got unplugged, it would still stop working like it was designed to.

@BuyitFixit Месяц назад

I did think of that, but the reason I didn't was resistors flapping around (although I could have used heatshrink etc it would have been messy. I chose to glue the connector in place. Both methods would however still have a problem if the sensor ever failed open circuit. I've just finished recording a follow up video on this.

@t1259sw Месяц назад

Nice troubleshooting.

@BuyitFixit Месяц назад

Thank you 👍

@JohnChrysostom101 Месяц назад

Wow i would of never thought

@BuyitFixit 29 дней назад

🙂👍

@acswales Месяц назад

Nothing like a Buy it Fix it video with your coffee on a Sunday morning. Excellent, as usual. Thank-you.

@BuyitFixit Месяц назад

Cheers mate 👍

@rogerkirby6586 Месяц назад

PTC = Positive Temperature Coefficient NTC = Negative Temperature Coefficient After fitting the fixed resistors I think I would of heated the sensor to check over heating still is reported. Other than that a great video.

@BuyitFixit Месяц назад

Thanks, I did a follow up video with thermal camera doing exactly that showing the temperatures it operates at and cuts off with different errors. After making the follow video I added a pinned comment under it as I made a very slight adjustment with the values of the resistors so it now also detects when the NTC is unplugged or failed.

@steventodd1902 22 дня назад

I think you will find that the flashing light is not OC but Deg C Great fix

@BuyitFixit 22 дня назад

@@steventodd1902 Thanks 👍

@cambridgemart2075 18 дней назад

There's nothing like a design review when there are component shortages; evidently at the manufacturer, there IS nothing like a design review.

@snafu2350 Месяц назад

I've got some bamboo kebab skewers from the local supermarket that would be far less hair-raising to point things out on a potentially live circuit board than a metal screwdriver (or pencil). They could also be used for applying hot-melt to inaccessible areas without cooling it down so much.. just a thought :) I guess gardening canes would do almost as well, albeit with ~3x the diameter Well done on the fix!

@BuyitFixit Месяц назад

Cheers 👍I've got some skewers, never though of using them as "pointy sticks" which ironically is what they actually are 😂😂😂

@atsimas 26 дней назад

A similar channel has a variable voltage power supply, injects 1.2.5v, and with a temperature viewer he normally replaces what emits the higher temperature. Not that simple, but a good start.

@BuyitFixit 26 дней назад

I've got one of those too, they are handy for finding shorts (like on the SSD hard drive I repaired) but this device didn't have any short circuits.

@allenrussell6135 Месяц назад

Same codes as an Everlast 82i plasma cutter. This must be a clone of one. Edit I forgot to say excellent work !! I learn something new from every video of yours.

@BuyitFixit Месяц назад

Thanks 👍Different codes on this machine, E01 is Under or Over Voltage, and E04 is Over Current on the Everlast.

@luckywetland Месяц назад

Mick, what an amazing fix. You're so brilliant, kind and generous.

@BuyitFixit Месяц назад

Cheers mate 👍

@leofortey7561 Месяц назад

I had the exact same unit. Mine would not adjust the current, it would only flash the display at 20. All cables were connected. I also had that internal leak at the gauge. My board was tight, though.

@BuyitFixit Месяц назад

Strange, wonder what the cause of that problem was. Faulty potentiometer?

@eternaloptimist2840 Месяц назад

I have one of these cutters, it was so cheap I expected little of it and it hasn't failed yet. But now I have to look inside to see how bad it migjt be, and if it would benefit from modification.

@BuyitFixit Месяц назад

It shouldn't need any modification if it's working. These units were not working at just below room temperature.

@johnwatson8820 Месяц назад

great fix ,yet again ,nothing seems to beat you in the end!! best wishes ,love your channel.

@BuyitFixit Месяц назад

Cheers John 👍

@Exciteonium Месяц назад

Great fix /rework! unfortunately Quality Control seem a thing of the past😞, in this case the wrong plug on the thermistor gave the clue to the design fault🙂. Well done!

@BuyitFixit Месяц назад

Thanks 👍yes it was the wrong plug that got me thinking about that 🙂

@marvelaturraz5405 Месяц назад

First, I'm extremely impressed by what he did in this video and I've learned a bit from it. Please forgive me if my question seems inane. Was his graph (@26:26) of PTC vs NTC a bit odd to anyone? There may be no substantive basis for this, but would it be more intuitive to lay out ∆T on the x-axis instead? To me it felt like trying to read something in the reflection of a mirror, as it required an abnormal moment to interpret. Am I just weird? 🤔

@JonnyFix Месяц назад

Well done! I'm jealous of your ability to obtain freeze spray. The greenies here have ruined it for us.... Best I can find is a can for about $100 from CRC. Used to be 1/4 that and everywhere.

@BuyitFixit Месяц назад

Thanks 👍I got it from someone at the repair cafe. You can also use one of those air duster cans if you use it upside down 😉

@Kevinrichardsonministries Месяц назад

I have the same Brand Plasma Cutter but mine is a PLC 65 Pro. It arrived not working, as well. One of the wires going to the power switch wasn't connected. Beyond that... once I got it working I found that it will only cut about 1/8 inch steel and it's supposed to cut up to 3/4 inch steel. That's why I bought the supposed more powerful unit. I have tried many things and I just can't get it to perform as advertised. Also... my units flame arc starts to misfire/sputter if I turn it up beyond 45 psi or so. Amp adjustment doesn't solve the problem either. I'm not at all happy with the unit other than the seller finally refunded my money in full and allowed me to keep the unit, as well. That's the only saving grace regarding the whole experience. I have replaced/upgraded the torch and the ground clamp and adjusted the arc setting gap inside the unit and I can't run above 45 psi as previously stated. Even cuts of 1/8 inch steel have slag and don't cut clean. I have good water filtration and plenty of pressure on my air compressor but still... no dice. My input voltage is 230 volts, so that's good too. Any ideas Anyone? I'd like to get this unit up to speed. That said... Thanks Mick for the video... I watched it all and enjoyed same. Subscribed...

@BuyitFixit Месяц назад

Thanks mate. I'm no expert when it comes to using and operating plasma cutters. I've got an Eastwood but only used it a few times here and there and only on around 3mm steel sheet.

@t1d100 Месяц назад

Those sensors come in different resistance values. We know the connector is incorrect. I think they ran out of the proper value sensor and, during the parts shortage, they sourced a wrong value, but continued production, anyway.

@BuyitFixit Месяц назад

Yes, those were my exact thoughts too 🙂

@lcjnsb Месяц назад

I'm an amature at electornics, but by adding the 14k resistors on the board didn't you just disable the overheat protection? If the thermistor fails it will not show the error code. Love your videos, keep up the good work.

@BuyitFixit Месяц назад

Thanks 👍When the temperature rises the resistance of the NTC lowers. So it would be a lot lower than the 14.7K I fitted. For example think of putting a 10 ohm resistor across those 14.7K and then measuring it with a meter.

@BuyitFixit Месяц назад

I've just finished recording a follow up video because of a few comments such as yours, and I test it out by heating it up and cooling it 👍

@kareno8634 Месяц назад

Silly, favorite quote, (describes me): *'If it's not broke, work on it until it is'.^* But, what you did here gives it another meaning, or could be what meant all along. ^ ['Celica Tech'] Where you using empty socket, seen corner of board, to plug in potentiometer? Not sure if Plasma cutter used, but Cut Away they did on *Francis Scott Key Bridge* over Patapsco River, just off Chesapeake Bay. Was quite a task, and busy area of Steel Dinosaurs moving the pieces. *Thanks!* Hadn't known Plasma Cutters required that many connections.

@BuyitFixit Месяц назад

😂😂😂

@grantcivyt Месяц назад

Always impressed by your knowledge and deductive skills. It would be interesting to know how long you work on these puzzles. I know it would be a hassle to track, but a work clock on screen would either cement you as a genius or give hope to the rest of us that hard work pays off. Even a rough estimate of time spent would be great. A fan from Florida

@BuyitFixit Месяц назад

Cheers 👍I'd have to keep starting and stopping the clock 😂😂I started these in the afternoon, then had other things I needed to do for a couple of hours, then came back did a bit more, then had food, came back again. I've seen me start a video and then do the rest over 2 or 3 different days as I don't do this full time.

@mauricecotton7885 Месяц назад

You are the GOAT LEGEND I HAVE 4 FAULTY PLASMA CUTTERS that have the same fault and I thought it was humidity on the board as sometimes they worked ok . I spent a fortune on air line water traps and air dryers😢

@BuyitFixit Месяц назад

Thanks 👍I now have ironed out the potential problem of the sensor being unplugged or failing. I have done a follow up video with a pinned comment (Make sure you read it after watching the video as it has new resistor values)

@mauricecotton7885 Месяц назад

@@BuyitFixit thanks again. By any chance did you figure out what the other modification was about with the scratches and soldering? 3 of my machines have the same high quality 😉modification. I'm just curious 👍

@BuyitFixit Месяц назад

No I didn't investigate that.

@cajuncoinhunter Месяц назад

Great Fixes Mon Ami .... I do remember Julian saying something about some solder work in the first unit he bought .... That was mentioned in the note he wrote you .... That might be those other parts you noted toward the end of the video... They might be cheaply built , but they do cut thin metal....

@BuyitFixit Месяц назад

Thanks Cajun, yes they work but not the best build quality. I've just finished recording a follow up video on these.

@gainmaster1 Месяц назад

Very clever fix with temp sensor

@BuyitFixit Месяц назад

Cheers👍

@cpunut 26 дней назад

Okay so this stops the error in a cold environment, but it still won't work as an over temperature alarm as designed as it's still an NTC. Great troubleshooting though! The poke around and look, magnifier sometimes required, method sure does seem to find so many problems.

@BuyitFixit 26 дней назад

I had a few people say things like that. Check out the follow up video I did with thermal camera, freezer spray, and heat gun, and show it all working.Then the pinned comment underneath as I did make a very slight adjustment after that by adding an extra 2K ohms so now it also detects if the sensor fails or is disconnected 🙂👍

@raymacklures5899 Месяц назад

I bought a single phase mig that was sold 2nd hand not working right. It was brand new Upon testing the wire feed was to fast. I changed the pot to a 10K the same value as the amp adjusting pot and away it went. So making sense of Chinese assembly is always to be questioned

@BuyitFixit Месяц назад

Nice 👍well done 🙂

@b92555 Месяц назад

Good troubleshooting Mick. I do have a problem with our solution. Looks like to me that you made a parallel connection of the resisters which means that the resistance of the circuit cannot exceed the 45k ohms of your soldered resisters so the machine can now overheat and not be shut down by the heat sensor. At least, according to my high school electronics course from 50 years ago.

@BuyitFixit Месяц назад

Thanks 👍see follow up video and pinned comment under it 😉

@dubsydubs5234 Месяц назад

There's a socket on the top left that's unpopulated on both machines and looks like the correct type for the temp plug, I'm probably wrong but I couldn't stop thinking about it all the way through the video. 😀

@BuyitFixit Месяц назад

I've just finished recording an update to this because of some comments.. stay tuned!👍

@jada1173 26 дней назад

Remember to not touch the measure probes in any way so you are part of the measuring circuit or else you can get false reading because of the resistance of your body. But a god fast job you got here, nice entertainment.. 👍

@BuyitFixit 26 дней назад

Thanks 👍I did a follow up video and then a slight modification since doing this.(increased the resistance I added to around 17K from 15K) Now it works perfectly including if the sensor fails or is disconnected.

@richardtaylor7199 28 дней назад

Great job.

@BuyitFixit 28 дней назад

Thank you! Cheers!

@gutsngorrrr Месяц назад

That so funny. You really do get some amazing extras with these cheap Chinese pieces of equipment. If I'd been hunting that fault down, it would have driven me mad, as I'd never have guessed that being a problem.

@BuyitFixit Месяц назад

Thanks 👍I've since done a follow up video and pinned a comment underneath it with a further update.

@linomoschin9521 Месяц назад

bella riparazione hai elaborauto un'ottima intuizione del problema grazie del video ciao

@BuyitFixit Месяц назад

Grazie👍

@BobCumberbatch Месяц назад

Superb diagnosis, simply awesome.

@BuyitFixit Месяц назад

Cheers Bob 👍

@Troutbum73 Месяц назад

I fitted a chinese diesel heater in my campervan conversion, it stops working when the temperature is approx minus 3 degC or lower. Gives an error code but nothing in the handbook to say what it is. They sent me a new sensor but still same. Luckily only had a few days below that temperature but very annoying it wont work when i need it most. Makes me think its the same issue and now is a good time to sort i. Thanks

@BuyitFixit Месяц назад

@@Troutbum73 yes it kind of defeats the purpose of a heater... I wonder if it's a similar problem. Might be worth disconnecting the sensor and see if it's the same error that it shows when below -3c

@s.janssen924 11 дней назад

By putting the resistance in parallel, the formula is 1/Total ohms=1/NTC ohms + 1/15Kohms. Should be put in series to ADD 15K ohms to the circuit.

@BuyitFixit 10 дней назад

Adding it in series would have made the overall resistance greater. The error was being caused by the machine thinking the NTC had gone open circuit. I did a follow up video on this where I show it all working with a heat gun, freezer spray and thermal camera if you didn't see that one. I did make a slight adjustment after making that video to fix the problem if the NTC fails or becomes disconnected so I added another 2.2K so a total of 17.2K in parallel with the NTC.

@wisher21uk Месяц назад

Really good fix well double fix, Mick they were poorly put together to be fair. My first rework station didn’t work when I received it, I got a refund as no more were in stock and didn’t have to return it. There were 2 fuse holders and only 1 was used and guess where the fuse was….. that’s right in the wrong holder lol, then after a few months when using the hot air it didn’t shut off and the whole thing just melted and nearly caught fire lol. Thanks Mick really enjoyed it 😊

@BuyitFixit Месяц назад

Cheers Gary 👍I recently bought a 4000W speed controller/Dimmer to control the power of a 3KW heating element. The plug was non fuses and had a thin cable and the switch was only rated at 6A! So would have melted! The heatsink was far too small too so I gutted it, mounted the big triac on a computer CPU heatsink with fan, put it in a bigger case with fuses etc and now it's fine. Some sketchy dangerous stuff out there...

@wisher21uk Месяц назад

@@BuyitFixit oh wow Mick yes there definitely is, sounds like a great mod maybe you should let them know about it lol, the first thing I do is change the cable and plug I hate the non fused and un-sleeved plugs and copper coated aluminium cable, they’re a fire hazard

@billbarney4937 Месяц назад

your car can be fixed too. just need an oem service manual or cd for your year/model. (auto transmission is the most complex part). as long as rust hasnt progressed too far which sometimes happens with cars in the northern states. will cars become obsolete and replaced by flying cars?

@BuyitFixit Месяц назад

Don't talk to me about bloody cars 😂😂I've had the LR discovery 4 in bits more times that I care to remember (body off at least 3 times). Had the gearbox out of the ML350 to do the CS oil seal but turned out to be the oil cooler seals right at the bottom of the V6. Got a friends renault on my ramp atm as it has a seized water pump and the timing belt tensioner had pretty much desintigrated not sure how it made it over here..

@Blacklab99 Месяц назад

I might be wrong but the hole in the regulator you were trying to connect to, is for a pressure gauge. It’s always smaller than the in and out ports. If you do not have a gauge, just plug it since there is a gauge is on the front.

@BuyitFixit Месяц назад

Yes, it's for the pressure gauge on the front of the machine, but the supplied fitting that came with one of the machines is the wrong size 🤦‍♂️

@johnhousego9218 Месяц назад

Excellent! well worked out. Yet another great video, thanks.

@BuyitFixit Месяц назад

Cheers John 👍

@599miata Месяц назад

Great fix, mate.

@BuyitFixit Месяц назад

Cheers mate 👍

@chriswilson7493 Месяц назад

Another well reasoned fix. I'm considering getting a plasma cutter, but it won't be one of that make 😁 I bet it's got an appallingly short duty cycle, when and if it decides to work at all. Always looking forward to your repair videos, all the best!

@BuyitFixit Месяц назад

Cheers Chris, yes I'd avoid these, get a half decent one. I think the one I have is an Eastwood Versacut, although hypertherm are supposed to be the best.

@brianwood5220 Месяц назад

Your family is so lucy having you about. You can turn your hand to anything. Imagine if you teamed up with Colin Furze for a collaborations episode, WOW the subscribers you would get from that would be epic. That would be fixer verses creator. Thanks for sharing Mick.

@BuyitFixit Месяц назад

I've spoken to Colin a couple of times on email a few years back, when I was doing another project 😉

@davecole2230 Месяц назад

Good work 👍

@BuyitFixit 29 дней назад

Thanks 👍

@evertwaldus7093 Месяц назад

Hi Mick, again an amazing repair, wauw man I like you way of diagnostics and your films are so nice to look at. Also nice to see that you fix from small to big devices ,you’re a real hero and not scared of anything, I like it so much !

@BuyitFixit Месяц назад

Many thanks! 🙂👍

@Hellhound604 Месяц назад

Great video showing deduction and problem solving skills.👍👍👍

@BuyitFixit Месяц назад

Thank you 👍

@SkySky-zr3bt Месяц назад

I am simply amazed! Great video, mate!

@BuyitFixit Месяц назад

Thank you 👍

@jasonhale4639 Месяц назад

28:52 The center 0 on the display on that unit is pulsing with it turned off, I had a desoldering iron do that when the hot and nuetral where reversed on the cord. You might want to check your hot and nuetral connections are correct. Of course that was on U.S. 120 volt so not sure how your European 240v is going to play into that. The desoldering iron came from china and had an improperly made IEC cord with the hot and nuetral flipped in the IEC plug of the cord. The actual desoldering iron had nothing wrong with it. Just a defective cord causing the unit to flash the display repeatedly while turned off.

@BuyitFixit Месяц назад

I think it was the microcontroller losing power causing it to glitch, it probably multiplexes the display digits. I'll check out what you said as you never know. I've got a follow up video on these out later today as I got a few comments saying that the mod won't work and I bypassed the temperature sensor so I did a full test with thermal camera 🙂

@alanbickerstaff868 Месяц назад

Why not connect your two resistors to the back of the heat sensor connecting plug ,that way if the plug falls out a fault will come up

@BuyitFixit Месяц назад

I did think of that but it was neater to solder it on the back, and the plug is now glued in 🙂

@jeroenbogers8825 Месяц назад

@@BuyitFixit Another option would have been to use a resistor value that is just over the 'E04' limit. Making it 16K for example, would work since the sensor would then need to go up to around 250k to reach the combined 15k limit. This still protects you from a disconnected sensor (or with, this 'premium' device, a burnt out sensor) but still allows use of the machine in freezing conditions. Maybe avoid taking it to the arctic where it could still have a false E04 trip, but I think there are way more other reasons to bring it there then the poorly chosen sensor 🤣

@BuyitFixit Месяц назад

I thought it was neater on the back, also less chance of them flapping about in the breeze. The plug can't fall out now as I glued it in 😉. Follow up video on this soon....

@BuyitFixit Месяц назад

I've just recorded a follow up video, out soon...

@TinMan-jb5gf Месяц назад

Like the idea of using the pot to check limits. Gunna start calling you Sherlock Ohms.

@BuyitFixit Месяц назад

😂😂😂😂😂😂😂👍

@SeersantLoom Месяц назад

Better solder those resistors to the temp sensor side, just for a case should the plug ever be disconnected again (even thou it was glued).

@BuyitFixit Месяц назад

I thought of that initially but it would be a bit messy I thought. That's the reason why I soldered it on the back and glued the plug in. If the sensor failed open circuit neither method would work but I guess without totally reverse engineering the thing there's not alot else I could do. I have made a follow up video (after some comments) testing the sensors operation with a thermal camera which is out later today.

@michaeldotc2254 Месяц назад

Well done, my man!

@BuyitFixit Месяц назад

Thanks, I did a follow up video on this and did another slight adjustment too(pinned comment on other video) so now it all works perfectly including if the sensor fails or becomes unplugged.

@richard8181 Месяц назад

Great fault finding and even better a good work around

@BuyitFixit Месяц назад

Thanks 👍

@Slydder68 27 дней назад

well shit. I could use one of them. my last one died a while ago. lol. nice fix guy.

@BuyitFixit 27 дней назад

Thanks 👍

@generaldisarray Месяц назад

Excellent work, as always. Question re the resistors, why not just cut a section out of one the wires going to the thermistor and solder in the resistors. That way if the thermistor became unplugged it would still throw an error.

@BuyitFixit Месяц назад

Thanks 👍Cutting one wire would make them in series with the thermistor, and we want parallel as we want the resistance not to go lower than 15K. If we put them in series we would have 14.7K + the value of the thermistor so 25.7K or so (it was around 11K when I first measured it). It shouldn't become unplugged because I added glue 🙂

@generaldisarray Месяц назад

@@BuyitFixit Of course, I wasn't thinking, d'uh. True about the glue. I'm a fan of blobbing some hot snot onto connectors and through hole components, it just avoids any jiggling loose or broken component leads. You could always put them in parallel by going across both wires of the thermistor. I've had to do that several times to stop 12 volt LEDs I've retrofitted into cabin lights in various vehicles from continuing to glow when they're powered off.

@BuyitFixit Месяц назад

Yes, I did think of that but thought it would be neater soldering on the back of the PCB 👍

@kizosgr Месяц назад

Hello, very interesting, but i was waiting for the cold - warm test to see this temp sensor after resistor mod finaly make his job...

@BuyitFixit Месяц назад

Good Point, I should have perhaps done that. I'm sure it will work just fine (although I don't have the spec for what temperature it should cut off at).

@BuyitFixit Месяц назад

Follow up video out soon 👍

@kevin30b90 Месяц назад

It would have been nice to see the freezer / heatgun test again to see if the protection works. I think 15k in parallel with 1 ohm is still approximately 1 ohm, or did I misunderstand how it was connected?

@BuyitFixit Месяц назад

I did a follow up video, and pinned a comment under it after making a slight adjustment

@user-xl5np5dp8n Месяц назад

That's a bit of Sherlock Holmes work there. The QC on the two units is crappy. Great work.

@BuyitFixit Месяц назад

Cheers 👍

@RB-yq7qv Месяц назад

well done

@BuyitFixit Месяц назад

Thanks 👍

@ralphj4012 Месяц назад

That was brave (or something) of you to plug them in prior to internal inspection. I lost track, but could there be an issue if the sensor failed open? I bet they have UK CA and CE labels, ho, ho.

@BuyitFixit Месяц назад

'Or Something'😂😂😂I didn't check for labels...Damn 'Always read the label' 🤣🤣🤣

@Ham68229 Месяц назад

I need to figure out what's going on with my Miller plasma cutter. Worked when I last used it, went to use it last yr, nothing, lights up but that's it, just like this first one was doing when you first tried it, eventually, the airflow stopped going through the torch.

@nudebaboon4874 Месяц назад

Good repair!

@BuyitFixit Месяц назад

Thanks!

@mikaelpalander3224 Месяц назад

Had the exackt same problem on my plasmacutter. Need to have it about 23degress or it will flash a temp light on plasmacutter AIXZ Global AIZ45 ..

@BuyitFixit Месяц назад

Check the follow up video I did and the new modification I've done (pinned comment under new video). Now it works perfectly (including if the sensor fails or becomes unplugged).

@wv146 Месяц назад

Great investigative skills!

@BuyitFixit Месяц назад

Thanks 👍🙂

@Garry1888 Месяц назад

Conan Doyle meets Fred Dibnah. Wonderful stuff.

@BuyitFixit Месяц назад

😂😂😂😂😂

@theuglidog01 Месяц назад

i learnt that cheap chinese is not always good! be it tools or food , even though i did not really understand how the fix worked , i did enjoy it all the same , thanks for another fix

@BuyitFixit Месяц назад

Thanks 👍

@JohnSmith-vi5pz Месяц назад

Hi Mick, It's Fred Smith, general manager of Heysham 2 nuclear power station here. We have a problem with one of the reactor cores not behaving and we can't solve the issue. I wonder if you could pop down with your Fluke meter and take a look at it for me please?

@BuyitFixit Месяц назад

Sure, I'll bring the radiation meter that I looked at in a previous video! 😂😂😂😂

@jed2055 17 дней назад

May be better to look for a suitable positive temperature coefficient sensor rather than fudge the resistance inside the unit. If you put 15 k resistance in parallel with the 15k sensor (at your normal environmental temperature) you automatically divide total ohms by 2. Is that what you need? Also interested to know whether npc ot ptc sensor in the other unit. With both being the wrong plug end I am gonna take a stab and say it also has the wrong sensor. At the factory this assembly line must have run out of the correct sensors and made do with what was at hand, forcing a round plug into a square hole so to speak. If it is connected to the heatsink with thermal paste you get better thermal conductivity. Again, is that what you need? It works with your hack but is it safe, is the $64 question Mick. And I watched the rest and you are returning these to their owner? Hmm.

@BuyitFixit 17 дней назад

Good question about "if its safe" I did a follow up video on this, where I test everything with freezer spray / heat gun and thermal camera! Also I did make a slight modification since doing those tests (see pinned comment under the follow up video).

@wesleythomas6858 Месяц назад

Great that you got it working. Does it still recognise if the sensor is unplugged or keep going until it fails catastrophically? Also, how have the resistors shifted the working temperature band? Will it work to a higher temperature now or cut out at a lower one?

@BuyitFixit Месяц назад

If the resistors were fitted in series then the band would be shifted, but because the resistors are connected in parallel, as the temperature rises the resistance of the NTC will decrease and be lower than the resistors I fitted, so once it gets to a low enough level it will trigger the protection at normal. If the sensor somehow got unplugged (which it's now glued in) or failed open circuit then there is a possibility it could overheat.

@BuyitFixit Месяц назад

I've just finished recording a follow up video... where I heat and freeze the sensor so we'll see if it works like I thought it would 🙂👍