A dead welding machine repaired. Model: super weld-200

By on September 16, 2013
weldingmachinerepair

A very serious fault was causing this machine not to work. The moment I plugged it into the electrical power socket, it caused an electrical short in my shop.

 welding machine repair

The customer, who brought this machine to be fixed, told me that it only needs a fan. I knew better than that because I saw this. As you can see in the photo, the electrical plug was really bad and that what caused the short in the machine. I was hoping that this short did not cause any further damage in the machine itself.

 welding machine repairs

Once I opened the welding machine and looked inside I could not see any sign of bad or burnt component but I will not be sure till I fix this cable and power up the machine.

 welding machine repairing

Once I repaired the AC cable and the plug, I connected to the electrical socket and the machine came on. One thing did not sound right. I did not hear the fan kicking in.  Once I checked the fan, this is what I found.

 welding machine repairings

This was a 24 volt fan connected to a computer chip that once it sense overheating, it gives a command to the fan to kick in and cool the machine. The only problem with this is I could not find a 24 volt fan to replace it. I only have a 220 volts fan sitting in my shop and I think I found a way to make it work. Instead of connecting the fan to the computer chip, I connected the 220 volts to the output of the power switch on the machine. Once the power button was pushed, the machine and the fan will work together. In other words, fan stays on all the time. I put this plan to action and here is the result.

 weldingmachinerepairs

I changed the power button to higher amp rating (16 amps) and I did my connection as you can see in the photo. The moment I pushed the power button, the fan also came on cooling the machine in a different but effective way. It was a challenge and fun. I enjoyed every minute of it.

In field of repair, we have to be creative to make things work. It we cannot find the right replacement, find another way to do it, test it, and approve it. Mission accomplished.

waleed rishmawi

 

 

 

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. Please give a support by clicking  on the social buttons below. Your feedback on the post is welcome. Please leave it in the comments.

By the way if you have any good repair article that you want me to publish in this blog please do contact me HERE.

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6 Comments

  1. Robert

    September 16, 2013 at 11:59 pm

    Thanks for the article, Waleed.

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  2. raymundo saura

    September 17, 2013 at 9:57 am

    thanks and GOD bless

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  3. Waleed Rishmawi

    September 17, 2013 at 2:15 pm

    Robert and Raymudo: thanks for the support.God bless you both.

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  4. Br123

    September 24, 2013 at 9:34 pm

    Most excellent repair article! Very helpful indeed. Keep it up!

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  5. Waleed Rishmawi

    September 25, 2013 at 4:02 pm

    BR123: thanks, I appreciate the support.

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  6. reychie canonigo

    October 8, 2013 at 2:04 pm

    thanks a lot for that wonderful information

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