Hi everyone,

Im Joe from France, but share my life with US States, for my work over 15 years .

Ive a personal workshop with a lot of equipment for machining metal work for build Drag racing car .

I have buy many years a cheap plasma cutter ( Inverter Tig/arc/cut welder ) . Work fine a lot of year , ive already had problem with this, but ive always fix ( capacitor, diode bridge, etc .... ).

This tools cutter a lot of miles metal and never had real big problem .

Last Week, decide to stop work . bad news .

I explain :

This plasma is a chinese Gianttech CAT-416D , powering with 230V 50Hz .

Last week, Cut and Tig stop working partially . HF working, but dont arc start . Why ? I dont no ...

Arc Welder work fine, never is a real great welder, but really fine for this type of tools

I check all diode, and all is ok, connector ground and torch is great , air pressure is 50 to 60psi and really dry, if i change Gap of "tungstene" component ive just result more or no more HF clear on torch . All component of torch is new and with regular gapping . I dont understand why arc never start.

I attachments a lot of pics for you see .

Ive you have idea how to try a fail component, or test, i would be really happy.

Thank you by advance for all,

Best regards

Joe