The new bridge rectifier (indeed from "yorweldsupplies" on ebay) arrived yesterday. They packaged it with great care - and a lifetime supply of bubble wrap.
There was no documentation, however the leads were labeled (AC, DC Neg, DC Pos). That was pretty straightforward. It is incredibly well...
Thank you! I used a common household cleaner called "409" - at least it's common in the US. Normally it's used on kitchen surfaces - it's great for general cleaning and mild degreasing.
Turns out six of the diodes are dead - the one with the obvious failure is short circuit thus no longer a...
I found the cooked component. I like electrical failures to make sense.
What is the best practice for a repair? I suspect that if the component burns its own leg off, it's probably dead.
Source and replace the single fried component? Replace the entire rectifier assembly with something modern?
Thank you for those troubleshooting steps.
Confirmed: Full mains voltage through energized contactor. (In the US we have split single-phase; 120V to ground for each leg; 240V between legs)
Confirmed: Full mains voltage through the selector switch
Confirmed: 17VAC - 31VAC at the input to the...
My Dan-Mig 140 Mono also died, mid project of course. I started a separate thread for that issue here...
https://www.mig-welding.co.uk/forum/threads/dan-mig-140-mono-suddenly-no-arc.104844/
The OP asked for an Operating Manual. I just discovered this thread. I scanned the operating manual for my identical unit (Dan-Mig 140 Mono) and made the images into a PDF (sorry, no OCR). The file is too big to attach here, but it is available in my google drive...
I've been using my buddy's Dan-Mig 140 Mono. I used it earlier today and it worked fine. Until it stopped making an arc - mid project of course.
I managed to find a number of posts on these forums regarding the Dan-Mig 140 Mono (aka Migatronic 140 Mono). This post...