SiPMerlin150
Member
- Messages
- 987
- Location
- Sunshine Coast, Queensland
Hopefully, the moderators could make this a sticky thread in this section, as these welders are rather scarce, and so often are the instruction, and circuitry diagrams too.
Last night I was welding a section of sill on my car and all of a sudden, the welder made a small 'pop' noise and stopped working. Power was on, so was the cooling fan, upon pulling the gun trigger I was met with a 'click' noise from the relay.
Upon opening the unit and stripping it down, to reach the board, I found the problem. A soldered joint on one of the legs protruding from the relay unit had failed and gone open circuit. I resoldered the connection and the welder sprang back to life again. One of the power switches was toasted slightly, that will be replaced.
I'm no electrician, so I can't follow the electric diagrams, but I still managed to work out how the internals work and it was rather simple.
Here are the wiring diagrams for this machine:
Last night I was welding a section of sill on my car and all of a sudden, the welder made a small 'pop' noise and stopped working. Power was on, so was the cooling fan, upon pulling the gun trigger I was met with a 'click' noise from the relay.
Upon opening the unit and stripping it down, to reach the board, I found the problem. A soldered joint on one of the legs protruding from the relay unit had failed and gone open circuit. I resoldered the connection and the welder sprang back to life again. One of the power switches was toasted slightly, that will be replaced.
I'm no electrician, so I can't follow the electric diagrams, but I still managed to work out how the internals work and it was rather simple.
Here are the wiring diagrams for this machine: