DrO wrote:
I have a Chicago (something) Plasma torch from Harbor Freight and it
keeps dying on me...you kind of get to rely upon the fun tools in the
shop!

The current issue is that it will spark the pilot arc but not continue
to burn (it's like it blows it out, or something doesn't cycle...bad
transistor or relay?)...I cannot find anything about the schematics
for it and I'm tired of taking it in for 4 weeks to get a $20 part fix
and a $80 labor bill.

If you put a daub of fingernail polish on
all the parts, you'll know the one that they
replace.