I have a Spectrum 375 plasma cutter. I was cutting up some 1/8" diamond plate aluminum for the trike I'm building and the machine just stopped working. I replaced the electrode and tip, checked the voltage, verified air pressure. Took the top off and blew out the little bit of dust there was in the machine.The power light comes on after a little while when turning on the switch, the fan runs. When I click the gun I get no flow or arc. The temperature light is on but not as bright as the other lights, looks like it may be flashing really fast. If I turn down the amp rating to 0 the air flows through the tip as expected.The machine is about 3 years old. Opened the drain plug on the air filter inside, no water (have a dryer at the compressor).Any ideas? I really don't have the money to take it to a shop. I do have a degree in Electronics Engineering, Software Development and have been welding nearly every weekend now for 15 years, so taking it apart, testing and replacing parts won't be a hassle.Anyone have any schematics or service manuals available? Thank you for your assistance in advance! My kids'll appreciate the help getting the trike finished!
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Broken Spectrum 375 Plasma Cutter