20 Most Recent Hypertherm Powermax 30 120-230V 1-Ph Deluxe Manual Plasma Cutter W/ Case & Accessories Questions & Answers

Make sure the machine is unplugged. Yes, remove the cover and blow it out. Good luck.

Louis D Biasi You resurrected a 12 year old unanswered question which will now stick on the Homepage, 'Unsolved' despite being answered. It is always better to make a squeaky fresh, clean question of your own. The area where you posted is the 'Additional Information' information are so perhaps the OP can take his apart for you, but where the trigger connects should be pretty straight forward. Electrical schematics are available. Here are some manuals https://www.manualslib.com/brand/mishto/welding-system.html But is appears to also go by the name of 'Rossi'. Better manual here https://www.manualslib.com/products/Rossi-Welders-Weld-Mig220bz-3941072.html ..

I have the same problem with the Mighty Mig...Did you find these resistor values?

Question edited for clarity. Normally on the back or hidden inside https://www.google.com/search?q=iron+force+95+welder+fuse+location Seems to be an unknown make. Try the link where you live https://www.google.com/search?q=iron+force+95+welder+manual ..

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjVzsuLuK6DAxUrtokEHT4aAJYQFnoECC4QAQ&url=https%3A%2F%2Fforum.millerwelds.com%2Fforum%2Fwelding-discussions%2F28129-millermatic-350p-help-3-error&usg=AOvVaw0mooQgzhw6_QIiLM08bRKh&opi=89978449

need a model number

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https://electronics.stackexchange.com/questions/309954/solder-paste-vs-solder-flux

Question edited for clarity. Some ideas in the link. https://www.google.com/search?q=Miller+250+welder%2C+brushes+unevenly+worn ..

To check if there is a signal from the switch on the gun, depress the switch and the wire should start to move out. If it does, the main board has a fault, if it doesn't, it may be a faulty switch.