Cooltig 220 Weldking

[tiguysabu]

Canadian machine, Main pcb is blown. No output voltage at torch (no arc)

Im trying to find a replacement part that would fit ! I have a few pictures.
this is supposed to be the one non functioning.
Thank you everybody.

W.496RM.891-C

TIG 200ACDC PFC primary inverter PCB

 

[eddie49]

Those pictures are not exactly helpful..... At least get the numbers off the boards!
For a modern intelligent AC/DC TIG, I doubt if you will find the boards on Alibaba etc.
Is it still under warranty? Can the supplier not help?

Post #12 of this thread has some general troubleshooting hints for inverter welders:

P

Thread 'lack of information to repair/fix ct312 multi welders'

May 12, 2025

I have a ct312 multi function welder which has failed but did function well for some time. I have spent some time examining the device with a multi-meter and oscilloscope but without a circuit diagram or block diagram it is impossible to trouble shoot. I consider it is well constructed, but scouring the internet, nobody has any help to give. I notice that there are a considerable number of indicator diodes which I presume help diagnoses. I assume the manufacturing company Pela Tools/Richmond/or Shenzhem wishes to limit the information available for financial reasons but I feel that it...

• philp aldworth
• Replies: 13
• forum: Welders and Welding Machines