Comments on: A Welding Machine Powers On But The Welding Is Very Weak Repaired

By: Waleed Rishmawi

Waleed Rishmawi — Sat, 30 Mar 2024 08:10:10 +0000

mevias: does it show the over heating warning light? if it does usually shorted components on board. does it power on fine? is there a voltage reading on the output of the welding terminals? if not? check the Diodes and the components around them. I need more info so I can help you out. have a blessed day

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By: mevias

mevias — Tue, 26 Mar 2024 12:05:50 +0000

afternoon sir, long time i have welding machine which as lgbt transitors,the problem is when i switch on the machine is coming on but it cant weld.
what could be the problem.

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By: Waleed Rishmawi

Waleed Rishmawi — Mon, 25 Mar 2024 07:08:18 +0000

In reply to Imoudu.O.

Imoudu: if you dealing with shorted mosfets or IGBT's usually you have to test if there are shorted parts around that area. usually some parts will get shorted along with these parts so you need to look out for them.
that is ok though, you learn and you move on and the next time look for these shorted ones before power on the machine. always use a current limiter to test to make sure there are no more shorted parts left in the machine. if you have any questions feel free to ask and I will try my best to help you out. have a blessed day

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By: Imoudu.O

Imoudu.O — Sat, 23 Mar 2024 19:41:56 +0000

I have been waiting for long an opportunity to handle one weildering machine and this came last Monday.However, having replaced what i thought i should replaced and power on, there was a loud bang, so i passed it over to an expert techican who latter did a good job.First attempt failed,but i believe subsequent attempt i will succeed.Thanks for sharing.

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By: Waleed Rishmawi

Waleed Rishmawi — Sat, 23 Mar 2024 17:45:34 +0000

In reply to Parasuraman S.

Parasuraman: thanks man. Have a blessed day.

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By: Parasuraman S

Parasuraman S — Sat, 23 Mar 2024 11:37:28 +0000

Good fix! You have dared to get it tried out! That requires a lot of courage!

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By: Waleed Rishmawi

Waleed Rishmawi — Sat, 23 Mar 2024 10:37:33 +0000

In reply to Albert van Bemmelen.

Ablert: it was not supplyiny a stable 220 AC volts to the machine so when the welding starts, the voltage drops, not enough to provide the voltage needed for the welding to take place. if you look closely to the base of the pins, both are cracked and it had to be replaced. have a blessed day

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By: Waleed Rishmawi

Waleed Rishmawi — Sat, 23 Mar 2024 10:32:32 +0000

In reply to Yogesh Panchal.

Yogesh: thanks man. have a blessed day

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By: Albert van Bemmelen

Albert van Bemmelen — Sat, 23 Mar 2024 07:54:09 +0000

The bad 16A/250VAC power plug you showed looked in the photo like a good old trusted European AC plug to me.
What exactly was wrong with the pins that the photo didn't show?

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By: Yogesh Panchal

Yogesh Panchal — Sat, 23 Mar 2024 07:02:36 +0000

Good Job!Waleed,

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