MIG Welder Troubleshooting and Repair - Telwin Maxmig 150/1 Turbo
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- čas přidán 21. 08. 2024
- Troubleshooting and repair of the Telwin Maxmig 150/1 Turbo.
If you want to know more about how MIG welding works, here is a great, short and concise video explaining it:
• What is MIG Welding? (... - Věda a technologie
I wish I had your knowledge! I have almost the same welder but completely different problem.
Freddie
Very well done, helpful video. I like the way you went through the steps one by one to eliminate the other possible pieces.
Nice to hear! Thank you!
Good to see someone using the same solder sucker I have.
Those are the best tool but no one uses them.
Hello, greetings from Argentina (Yes, that corrupt country in the south), I would like to ask you, could you please tell me what is the voltage that you have at the output of the main transformer. I saw that they asked about the diode bridge, some 50A 1200v works well in the case of mister Z or 50a 1200v 50hf120 would be much better.
Excellent diagnostics
Thank you for the information and excellent video
Thanks a lot, Mr Z!
Ace video. Electric repairs seem easy if you know how they work.
Nice video! Wish I had your knowledge :) I would love to learn what and why you are measuring. You do tell and i understand some but others not. Have a nice day!
Hi Pär! Thank you for the feedback! I will keep that in mind.
Here is a very short, simplified description of some of the measurements.
Coil/Transformers: These components are essentially long copper wires wound around iron cores in different configurations. To make sure these copper wires are not broken, due to overheating or mechanical impact for example, a continuity test is done with the multimeter.
Semiconductors (diodes, transistors, IC-circuits, etc.): Intact semiconductors have a certain voltage drop across them, which can be measured with some multimeters. When semiconductors fail, they sometimes short out, which means that you would have a dead short across them instead.
@@SunandWeather Thank you very much for your very clear answer! :)
I have a Lincoln weld pak and it wont feed the wire,I put 6 volts to the motor and it works ,but cant find whats wrong ,I took the board out and it doesn't look burned but ,what you just fixed here I haven't tested for continuity. Just wish there were more videos that could help me ,like yours. Thanks.
Hi Johnny! If it is just the wire feeding mechanism that is not working I would start by making sure that the wires to the motor are intact and that the connections/solder joints are not damaged or corroded. This can be done with a continuity test. As for a failure on the control board, it is hard to give useful troubleshooting suggestions without a schematic. You could do some manual component/PCB checking; looking for shorted semiconductors, resistors that has drifted in value, cracked solder joints, broken traces on the PCB, etc. Good luck!
Hi I have mig welder and when you adjust the welding voltage switch 1 two 12 some won't ark on the numbers.
Hi tim Celtic! Assuming your MIG welder is similar to the one in the video, my first guess would be that the switch has gone bad. If the welder has gone unused for some time it might just be some oxidation inside the switch. You could try cleaning it with some contact cleaner, or just push it back and forth many times and see if it starts working.
If that does not work, you could try to make sure that the wires from the switch to the transformer are intact using a continuity tester.
Aș dori dacă mă puteți ajuta cu o informație ! După o intervenție de schimbare cap sudură , am scos din conexiune al 2-lea fir din grupul de 3 al conectorului de pe placa de comandă,( practic firul din mijloc) ! Bănuiesc la motorașul de antrenare sârmă flux dar nu sunt sigur. Menționez că nu am schemă și am căutat...
Hi, welding machines are really not within my area of expertise, so I do not want to make guesses. I suggest you try to find the service manual.
Hi mate. I've got an old mig welder I'm using for flux core welding. No gas. It has similar settings to yours. Switches Min, max, 1 and 2. I was thinking of replacing these switches with a dial potentiometer so that I can smoothly adjust the output voltage. Would this potentiometer need to handle the large 150amp output of the welder, or would a smaller one be OK? Many thanks.
Hi DREADNOUGHT! I do not recommend you do this. The switches are switching between different taps on the transformers. Replacing these with potentiometers would connect the taps together through the potentiometer, which would most likely not have the desired result. It would also introduce a series resistance on the transformer winding which would limit the current.
@@SunandWeather Thanks mate. I kinda thought it'd be tap off points from the transformer, that why I was thinking of using the two outer wires, and therefore getting a full range of voltages once the pot was in place and simply safely terminating all other wires on the secondary. I've not even looked inside to be honest, I just saw your video and thought I'd ask. So it's a big "No" from you then buddy?
@@REVERSE_BIAS Yes, I would advice not to modify a circuit with a power transformer unless you know the design and are certain what effect your modification will have.
@@SunandWeather Yep, and furthermore, using mere potentiometer to adjust welding power would require quite a giant potentiometer to withstand its huge power loss, any regular potentiometer would turn into fumes immediately. If you wanted to modify in any additional power adjustment not relying on tap switching, you need some sort of PWM control to alleviate the huge power loss within the controller.
hello again , is this mig negtive electrode ? i must check the cable which is connecyed to the rectifire bridge.
and if i replace the torch lance with euro torch , i need two wires for triger. where can i get the other wire from? which connection? i am in process of fitting euro lance and having the +ve and -ve terminals fitted to the body panel with isolated connectors. do you have a wiring diagram for the welder? it looks easy and simple. but lots of wires every where cramped in small space.
Hi again! I was not able to find the wiring diagram, so I cannot answer your questions with certainty. When it comes to modifications, I would rather not speculate in a field I am not comfortable in. Finding the wiring diagram for a similar unit might help you to some extent.
@@SunandWeather i tried teiwin but no chance. i need to ask proffesional whon can sort this. i do not want to delve in to some thing which i have no knowledge.
What do you think about telwin welding machines?
Hi solomon8864! I have no prior experience with welding or welding equipment, but from what I found during this repair I think it seems to be quite a solid build. As we saw, the transformer was not burned out, so there is no sign of under dimensioned components or bad electrical design. It most likely broke due to impact. They could of have secured the control board with shock absorbing rubber grommets to reduce the likelihood of this happening, but that in turn could lead to other problems with age and so on, so I would not call this a bad design choice. Now, this is quite an old machine and I have no idea if Telwin offers the same level of quality today.
hi nice vid. i wounder if you know where can i get a new wire feed rollers unit 12 volts. i have a welder just like yours. either i buy new same wire feeder unit or buy totally new wire feeder unit of a different type and fit euro tourch lance which i have .
Hi john smith, if the motor has gone bad, you could probably replace just the motor. I suspect it is a relatively standard 12V DC motor. See if you can find a part number on it and you will probably be able to find a replacement a lot cheaper than replacing the whole wire feeder.
Lovely!, But what was the problem?
Troubleshooting but not telling what the problem is/was.
Hi Frank Tenbult! Since the transformer for the control board was broken, the control board was not getting any power and was not able to operate at all. I do not know exactly how the control board works but I assume it controls the switching of the reactance coil to create the spark. So, no power to the control board meant no switching of the reactance coil, which resulted in no spark being generated.
I should probably have included this analysis in the video. Thank you for your feedback!
He clearly told and showed that the coil wire from the control board transformer terminal pin was broken loose, which he resoldered into place with help of additional piece of copper wire.