You guys are awesome between guajilloweld’s diagram and Weld Dr’s tip on the diode I think I have it nailed. Just pulled that diode and I have full continuity both directions. I’ll order one tonight. Thanks all!

You’re going to end up with your hands inside that machine if you move forward with it, so may as well open her up and make sure you’re comfortable working on live electronics or find someone nearby to help you.

Sounds like a shorted diode in the main rectifier. Profax is a great place to get diodes great prices.

I have an older (read ancient) Syncrowave 300. I have it running off a 100 amp breaker on 2awg wire no plug hardwired to panel. It’s been working fine. Was welding all morning and all of a sudden started tripping breaker. The 100 amp breaker trips before I even strike an arc. I can reset the breaker...

I'm buying one and I tried the serial no# JH315449 but it return unknown does any one have manual reference for it and the year?
and also what type foot pedal it requires in model or pins. or is there a kit package for it. Also for a house hook up if I ran a 150 amp fuse box in the Garage from...

Hello, I just bought a 161S and I set it up to 160 Amp but when I start welding it changes as low as 55 but I never get the 160 Aps, is this normal?
I attached a video link fist stick is 6010 second is 6011.
Thank You

I have the oppourtunity to purchase one of these for $375 (used but in excellent condition). I assume this is an older model, but I'd like some information as to its age specs and capabilities.

Thanks!
Kev

Reading the manual just taught me that there is a hidden switch under the hinged face panel called a Start Circuit switch and if not in the 'in' position the Start Amperage adjustment doesn't work. There is no label on that switch. Moving it to the left (on this machine) actuates the CR4 relay. Anyone...