Hi! I am writing from Russia and my English is very bad, sorry.
I bought a used welding Fimer MIG-165, and he broke down. After some time ceased to regulate the wire feed speed. The wire is fed continuously at maximum speed.
Dismounted welding, found charge wire feed speed control and saw a little burnt transistor BDX54C (perhaps it was replaced, but the transistor is always open).
Changed to such and such the same, but 10 minutes later he again broke down. Posted in technical support, but no one answered.
Maybe someone knows why this can happen or has an electric circuit of this unit?
http://serpimolot.ru/photo_fmr-6f4165002.jpg
http://i066.radikal.ru/0909/59/927dcde3d24c.jpg
http://s52.radikal.ru/i137/0909/e8/3c387fb43b68.jpg
http://s45.radikal.ru/i108/0909/15/b0430218866b.jpg
http://i052.radikal.ru/0909/b0/e1ca97c934ea.jpg
I bought a used welding Fimer MIG-165, and he broke down. After some time ceased to regulate the wire feed speed. The wire is fed continuously at maximum speed.
Dismounted welding, found charge wire feed speed control and saw a little burnt transistor BDX54C (perhaps it was replaced, but the transistor is always open).
Changed to such and such the same, but 10 minutes later he again broke down. Posted in technical support, but no one answered.
Maybe someone knows why this can happen or has an electric circuit of this unit?
http://serpimolot.ru/photo_fmr-6f4165002.jpg
http://i066.radikal.ru/0909/59/927dcde3d24c.jpg
http://s52.radikal.ru/i137/0909/e8/3c387fb43b68.jpg
http://s45.radikal.ru/i108/0909/15/b0430218866b.jpg
http://i052.radikal.ru/0909/b0/e1ca97c934ea.jpg