MTS211Si not feeding wire

[mts211si]

More details:

The stick function doesn't work when cold either. I let the unit sit for a few hours and tried to strike an arc with the stick function, but nothing. Warmed up the circuit boards similar to before until the drive roller started spinning when torch button was pressed. At that point I could switch modes and stick weld. I believe this means that the cold solder joint (or whatever the source of the issue is) affects more than just the feed motor. Note: the display, gas solenoids and fan all work when cold and don't seem to be affected.

[TheGary]

in my case the feed rolls kept working but the intermitted feed was drag in the liner.

[Rambozo]

More details:

The stick function doesn't work when cold either. I let the unit sit for a few hours and tried to strike an arc with the stick function, but nothing. Warmed up the circuit boards similar to before until the drive roller started spinning when torch button was pressed. At that point I could switch modes and stick weld. I believe this means that the cold solder joint (or whatever the source of the issue is) affects more than just the feed motor. Note: the display, gas solenoids and fan all work when cold and don't seem to be affected.

Sounds like a thermal issue for sure. Since the stick function is also out it is probably deeper in the circuit than the drive output. Look over the board with a magnifier or microscope. Look for poor joints, cracked traces, or lifted pads. Reflow anything suspect. Also this could be a thermal issue inside a component. Check any socketed components for bent pins and being fully seated. Because of safety issues, I'm hesitant to go any farther. But if you know anything about tracking down intermittent thermal problems in electronics, you can probably track this down with standard procedures. These are high energy circuits so if in doubt, send it in for repair. If you touch the wrong thing, it can and will kill you, before you can say whoops.

[mts211si]

Thanks again for the input.

Unless Everlast can point me to the specific area(s) I should be inspecting, I'd rather receive a new board from them. I played around with it more yesterday and this morning, and the threshold temp seems to be closer to 60 degrees F. Warm it up 5 or so degrees higher and things seem to work okay, although I did get some strangeness once in a while.

[mts211si]

Update:

I called Everlast on Thursday and spoke with support. He suggested a new board should be sent, and I could return the original using the same packaging. He then said I should call back and chose the Sales dept extension in order to speak with Oleg (who I purchased the unit from). I did what he asked and ended up leaving a call back number with someone else since Oleg was on another call. I followed up with an email to Oleg that reiterated the details and included a link to this thread. I haven't heard back yet.

[zoama]

Are you saying Oleg needs to approve this board exchange or is the part on it's way ?

[mts211si]

Are you saying Oleg needs to approve this board exchange or is the part on it's way ?

Sorry, I attempted to clarify my original post right after submitting, but the forum was acting strange and wouldn't let me click the edit button.

I was supposed to contact Oleg in order to get him to approve the shipment of a new board. Plus, the support rep said he didn't know which board it would be, and that Oleg would need to discuss it with the engineers in order to determine the correct one to ship.

[zoama]

I believe your part has already shipped. Working on tracking #