TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Discussion Forum

Damaged Welder W/Drawing

Welcome Guest, Log in or Register

Author

Ezmoney

04-06-2002 11:57:32

Report to Moderator

I have an Lincoln SP 130T 230v (single phase) mig welder wich was working fine until I plugged it into 440v three phase plug and the smoke started rolling out. I know a little about electricity and was wanting to know where to start looking for troubleshooting (or a new welder?). Any help will be greatly appreciated. Thanks! Circut Drawing in link below.

Drawing

[Log in to Reply] [No Email]

MarkB

04-07-2002 06:16:59

Report to Moderator

Re: Damaged Welder W/Drawing in reply to Ezmoney, 04-06-2002 11:57:32

The first thing that you do is to use your eyes and nose to see what smoked. I can just about guarantee you that you'll find one or two bad components this way. Check the transformer out real carefully, and look for obviously damaged components. They may be brown or black, cracked, or have broken leads.

If you've replaced anything that's obviously blown, then plug in in and check the ac voltage at the primary and secondary windings of the transformer. You should see about 220 vac on the primary (h1 to h2) winding and about 30 vac on the secondary (x1 to x2) winding.

I agree with Mike W that the diodes shouldn't blow unless you hit the trigger.

I'd guess that most of the stuff on the control board is toast, along with miscellaneous stuff like the fan motor. If your transformer is OK, it's almost certainly worth fixing.

[Log in to Reply] [No Email]

Mike W

04-06-2002 20:34:41

Report to Moderator

Re: Damaged Welder W/Drawing in reply to Ezmoney, 04-06-2002 11:57:32

I hate it when companies just show a outline called control board. I had to reverse engineer a tig control board to understand how the thing worked.

Your main transformer and diodes sre probably ok since it doesn't see input power until the trigger ii pushed. Check the 24v transformer. If it is ok, the control board is probably the problem. Let us know.

[Log in to Reply] [No Email]

Al English

04-06-2002 18:29:47

Report to Moderator

Re: Damaged Welder W/Drawing in reply to Ezmoney, 04-06-2002 11:57:32

As Jim pointed out, electronic stuff can't tolerate much abuse. After looking at your schematic I'd say take your pick on what may or may not be toasted. Closely examine everything for evidence of overheating or damage. Look at the color of the motor and transformer windings. Closely examine the circuit board and each component on it. If you can get your nose in close enough, carefully smell each component(make sure no one in the area has a camera). It wouldn't hurt to make sure the unit is un-plugged when you're doing this. You may think I'm joking, but sometimes the smell method works pretty well.

My experience has been that repair parts for welders cost a lot more than you'd think they should. That being the case, I wouldn't start buying parts until everything has been completely checked. Otherwise, you could end putting more into repairs than the unit is worth. I hope this works out ok for you...Al English

[Log in to Reply] [No Email]

Jim K

04-06-2002 15:25:59

Report to Moderator

Re: Damaged Welder W/Drawing in reply to Ezmoney, 04-06-2002 11:57:32

you should probably bring it to a shop that sells them and let them have a look at the thing.
My guess would be that that circuit board is most likely toast. at the least.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy