Migatronic wire speed

[tazzman]

Hi

My old migatronic 160 compact have a problem. I can't regulate the wire speed. It's running full speed as soon as I push the button.
I believe it's something in the electronic control panel, since every other thing is working ok. Do anyone have a clue what could be the reason? Or ever better if someone have the electrical diagram from the circuit board.

(apologize my bad english, I'm from DK)

 

[rtbcomp]

Welcome to forum, I've moved the thread to the Migtronic section.

 

[Arcfire]

Most likely the main transistor that regulates the motor speed has shorted on the pcb. It will be attached to a heat sink. Try testing for shorts on likely components on the board.

Good luck