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A Welding Machine Powers On But Does Not Weld Repaired. Model: INC-CO

By on June 8, 2021
A Welding Machine Powers On But Does Not Weld Repaired. Model: INC-CO








A regular customer brought this welding machine for repair and the main complaint it does not weld.

how to fix welding machine

They are well known welding machines and highly used among welding technicians in our area due to the fact that these machines are assembled in a city nearby and the parts are always available.

how to repair welding machine

The first logical thing to do in a case like this is to test the output voltages at the main terminals of the machine and as you can see there is none. The power LED light is on and the fan is on but no voltage readings mean a lot of things.

First I want to check for broken connectors and the reason I am doing this first because I am familiar with this customer and his carelessness when dealing with his machines.

dry joints in welding machine

Big damage due to the intensive usage, no maintenance and banged up body of the machine is a sign of the machine being dropped very often.

welding machine fix

I took the screw off to see the damage beneath and look with a found; a completely broken off connector and there is a good way to deal with this.

connector in welding machine

A brace piece was cut off according to the size of the damage; then drilled a hole in the side of it, put the screw through it and then add solder/flux on both side of the connector.

connector in welder machine

That is a very solid connection and once all the area was cleaned off from the flux, I applied power and hoped for the best.

simple ways to fix welding machine

As it is seen in the photo, the voltage readings are restored on the main output terminals of the welding machine and of course as always take it next door for my brother to check and confirm that it is up and running and it was.

Mission Accomplished.

This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.

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Note: You can check his previous article on Zika Welding Machine Repair




  1. Albert van Bemmelen

    June 8, 2021 at 12:14 pm

    Although you are always capable in fixing the even most damaged welding machines it in this case becomes sadly a bit dull to read about it. Especially when like in this given example no real electronic damaged or replaced part with datasheet was given.

  2. Parasuraman S

    June 8, 2021 at 12:38 pm

    Well, that was a good fix! You made it possible!

    • Waleed Rishmawi

      June 8, 2021 at 3:14 pm

      Parasuraman: thanks man. it did not make sense to me that it was on but the voltages were not so when tracing the voltage reading I found that broken trace. thanks for your comments and I have a blessed day

  3. Waleed Rishmawi

    June 8, 2021 at 1:51 pm

    Albert: in repair sometimes a missing voltage is caused by a broken trace and that is the case here. Sorry I disappointed you. have a blessed day

  4. Yogesh Panchal

    June 9, 2021 at 10:42 pm

    Good Job! Waleed

    • Waleed Rishmawi

      June 10, 2021 at 6:15 pm

      Yogesh: thanks man. have a blessed day


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