Hello Forum Viewers,
I am a newbie to this forum and I was wondering if anyone can help please?
I've been restoring a rather rusty car and have been mig welding to make good my repairs (learnt mig welding on this project).
I thought I would like to have a go and learn tig welding too, as I need to do an internal and external A pillar repair due to "tin worm" and I thought it would be better to do this with tig. The particular tig welder I have is a Thermal Arc 150gts. It has a pulse function and greater amperage control than my mig and I thought the final result would be a better job if tig'ed.
The only problem is the welder has stopped working, when I switch it on, the fan and the green led light on the front of the control board operates, but that's it. There is no arc at all, no high frequency, no scratch start of any description.
I took it to a welder repair house (I won't mention any names) based at Shepshed, near Loughborough and was told it was the Integrated Power Module (IGBT) and paid for an hour's labour. They then tried to sell me a new welder!!!
I sent the machine to a welder repair place based at Harrogate, York. They initially categorically stated that it was not the integrated power module and found a logic output fault. By coincidence, they also happened to have a machine the same as mine and swapped the boards from the other functional welder to my welder and revised there fault finding diagnosis to, it must be the integrated power module!
I researched the tig welder and found the circuit boards were made by SANREX and I managed to find a brand new integrated power module from an Asian electronics broker for about a third of the cost of what Thermal Arc wanted.
I bought the new Integrated Power Module (IGBT), installed it and unfortunately I still have the same symptoms as above. - No Arc

Does anyone have any experience, knowledge or ideas on what the problem might be please?
Thanks
James
I am a newbie to this forum and I was wondering if anyone can help please?
I've been restoring a rather rusty car and have been mig welding to make good my repairs (learnt mig welding on this project).

I thought I would like to have a go and learn tig welding too, as I need to do an internal and external A pillar repair due to "tin worm" and I thought it would be better to do this with tig. The particular tig welder I have is a Thermal Arc 150gts. It has a pulse function and greater amperage control than my mig and I thought the final result would be a better job if tig'ed.

The only problem is the welder has stopped working, when I switch it on, the fan and the green led light on the front of the control board operates, but that's it. There is no arc at all, no high frequency, no scratch start of any description.

I took it to a welder repair house (I won't mention any names) based at Shepshed, near Loughborough and was told it was the Integrated Power Module (IGBT) and paid for an hour's labour. They then tried to sell me a new welder!!!
I sent the machine to a welder repair place based at Harrogate, York. They initially categorically stated that it was not the integrated power module and found a logic output fault. By coincidence, they also happened to have a machine the same as mine and swapped the boards from the other functional welder to my welder and revised there fault finding diagnosis to, it must be the integrated power module!
I researched the tig welder and found the circuit boards were made by SANREX and I managed to find a brand new integrated power module from an Asian electronics broker for about a third of the cost of what Thermal Arc wanted.

I bought the new Integrated Power Module (IGBT), installed it and unfortunately I still have the same symptoms as above. - No Arc


Does anyone have any experience, knowledge or ideas on what the problem might be please?
Thanks
James