That may help you to know the signals on the 9-pin plug.
Do you have a part number on the PCB? ( Something like "76116187" or similar.)
Are there power transistors behind the brown steel angle?
What is the actual fault on the machine?
Have you tried the Polish electronics website elektroda.pl ?
There are a lot of clever guys on that Forum, and they often do component-level repairs.
Transistors are blown and i dont know what are originals because someone put 2 different types and blown a some Circuits on pcb and i didnt find schematic for this pcb
This earlier thread on the Forum about a Migatronic 180MXE contains the part number that you referred to - 17616973 - and states that it is the Control Box:
Please can anyone tell me where I can obtain a spare control PCB for a Migatronic Automig 180 Mono or a circuit diagram for the PCB?
www.mig-welding.co.uk
Regarding the incorrect power transistors, that thread says: "The two FETs ( 1RF530 ) are the drive and brake devices for the wire feed motor. One of them is turned on to drive the motor and the other is turned on to short circuit the motor in order to brake it quickly."
The IRF530 is a 14 Amp 100 volt N-channel MOSFET.
It also says: "The drive to the Gas Valve and main contactor is from the 24V supply switched by a Triac ( BT137 ) which is controlled via the opto-isolator. ( K3021 ).
Hi. I have a problem with my migatronic. It worked just fine one month ago , since that it has been standing in warm garage and now there is a problem. So when i push the lever from welding pistol wire feed motor activates , gas valve activates and also contactor activates but when i release...
www.mig-welding.co.uk
These threads mention several different numbers for the actual PCB in the 17616973J box:
MPS-STD MPS STD Pt No 76116973
76116982 MPS-4TF Continuous welding, spot, stitch, latching, current control
76116983 MPS Continuous welding, spot, stitch
76116984 UPS Continuous welding
The 9-pin plug on the Control Box is wired as follows:
1 - White - 24v AC ... 2 - Orange - To Gas Valve ... 3 - Blue - 24v AC ... 4 - Violet - Temperature Sensor ... 5 - White - Trigger Switch
6 - Blue - To Welding Power positive ... 7 - Grey - Trigger Switch ... 8 - Black - To Motor ... 9 - Red - To Motor