Go to esabna.com. support then download. In the download area look for the global manuals link. Click on link. you can down load the directory or find the search window at the bottom of the page. enter 0317 090 025 click on arrow to the right. manual will down load. Manual is in three languages. It only has the machine diagram and not the pcb diagram. What country are you in.? you might be able to get an ESAB repair shop to ask for the pcb diagram. Sometimes we can get them on older machines. new units are real hard to get. Or try your self. Go to ESAB web site for your country and ask. see what happens. Tell what you ave found and ask for the information you need to complete repairs. You might get lucky.