stevethegrease
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- Ger Abergwaun GB
Does anyone know the part number of the metal cased transistors* on the circuir board? Mine are so rusty that I can't read the numbers. I know its BF something
I bought my transmig 140 last year and it's often played up, but I had it working reasonably well.
I decided to re-do the little timer chips so the pulse welding would work . My mate said to solder sockets in as then changing the chips is easy. He was right. I also tidied up a few dry looking joints on the board.
Upon re-fitting the welder now does the fault described in another post,(54278) after about 2 seconds the contacter pulls in of it's own volition. Its suggested in the post that some of the transistors may have failed , fine ...... but I can't read the part numbers off mine to replace them. When I pull the trigger the feedmotor operates, so is the contactor and the feed motor operated seperately? Does anyone know the pinouts for the board? Or a circuit diagram of the board?
Advice would be appreciated.
* or the little black ones
I bought my transmig 140 last year and it's often played up, but I had it working reasonably well.
I decided to re-do the little timer chips so the pulse welding would work . My mate said to solder sockets in as then changing the chips is easy. He was right. I also tidied up a few dry looking joints on the board.
Upon re-fitting the welder now does the fault described in another post,(54278) after about 2 seconds the contacter pulls in of it's own volition. Its suggested in the post that some of the transistors may have failed , fine ...... but I can't read the part numbers off mine to replace them. When I pull the trigger the feedmotor operates, so is the contactor and the feed motor operated seperately? Does anyone know the pinouts for the board? Or a circuit diagram of the board?
Advice would be appreciated.
* or the little black ones