Hello all, I hope someone can help with this as it has been costing me sleep and sanity...
I have an inverter tig welder that had a capacitor blow on one of the boards, I think the main power supply board but not sure since there is no info around about these Chinese welders. So I replaced the capacitor with an identical one and now I blow MOSFETs and resistors on the high frequency board. Any idea what might be going on? I don't think pictures would help but I'll upload some in a bit.
I added some pics... 1st 2 are of the board that keeps blowing mosfets and resistors. 2nd is of the main power supply board. Here's how it laid out...
https://www.electro-tech-online.com/custompdfs/2010/09/weldingpowersupplies-an.pdf (the gate drive diagram)
Thank you for your help
I have an inverter tig welder that had a capacitor blow on one of the boards, I think the main power supply board but not sure since there is no info around about these Chinese welders. So I replaced the capacitor with an identical one and now I blow MOSFETs and resistors on the high frequency board. Any idea what might be going on? I don't think pictures would help but I'll upload some in a bit.
I added some pics... 1st 2 are of the board that keeps blowing mosfets and resistors. 2nd is of the main power supply board. Here's how it laid out...
https://www.electro-tech-online.com/custompdfs/2010/09/weldingpowersupplies-an.pdf (the gate drive diagram)
Thank you for your help
Attachments
Last edited: