SWP Mig 241 Proline welder

[Nix2]

Hi
You could perform such a test (in amateur conditions, without measurements or instruments).
Turn on the button on range 6 (once, to prevent the fuse from tripping) and hold it there (securely tape it shut) for 5-10-15 minutes. You could monitor the temperature, for example, every 120 seconds (remotely, or CAREFULLY by touching it with your hand after disconnecting the power supply).

If there's a short circuit, the transformer/diode bridge/range switch/wires will heat up (and with a severe short circuit, it may even smoke), and then the location of the heat will indicate the problem (or one of the problems).

 

[Nix2]

To be clear, if there is no short circuit in the MIG circuit (or, more simply, the transformer), after 15-20 minutes of idle operation, the transformer should be as "cold" as it is at rest.
Should it be at ambient temperature.

 

[popeye59]

Hi, I have tried what you advise me to do to keep the trigger press for 10 or 15 minutes the main Transformer was warm to the touch, but it did not trip the fuse I also tried to weld with it and it looks that it's not a Constance flow of the wire it seems to be intermitted when you try to weld. I wonder if that could be why it's not penetrating, but when try it with no welding the flow of the wire is fine it goes continuously so that is what I have notice and the weld is not a smooth weld its rough.

 

[Seadog]

Maybe your feed rate is too low for the current?

 

[Nix2]

Show us a few welding samples and show us what the LED displays indicate during welding (so that the set voltage range is also visible).

As @Seadog wrote, the wire feed speed must also be precisely matched to the set voltage (i.e., the machine's ability to melt a specific amount of wire – in simple terms).