Does anyone out there have any servicing information for a 80's
vintage Idealarc 300/300? I've put the unit on a load resistor and can
only get it to deliver about 50A worth of current regardless of the
heat selector. Doesn't matter if I use the front panel control or the
Amptrol, AC or DC. I suspect the problem may lie in the output control
pc board. The manual I have for it doesn't show the schematic for the
board. I found a similar schematic for a TIG 250/250 on the Lincoln
site, but it's not identical to the board that's in my welder.
With that being said, are there any common failures for this machine
that I should be looking for? I got a great deal on it($200), so I'm
not afraid to stick a bit more $$ into it. It welds like crap right
now. Thanks for any help/advice.
17 years ago