At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
First, UNPLUG the Welder! There is a small control board (2"x2") that the feed motor plugs into, it has a fuse on it. Here is what you do: Follow the circuit board trace that goes from one side of the fuse though a resistor then to the connector full of wires on the edge of the board, check that resistor for continuity it should read some value besides open. If it is open, this is your problem (as the drive motor ages it draws slightly more current than new, which should blow fuse, but instead blows the resistor). The resistor should be replaced with same resistance value, if problem persists replace again but instead of 1/4amp bump up to a 3/4amp for $1 or replace that drive motor for $150, you choose. Good Luck!
NOTE: As with any circuit board, take precautions to prevent ESD damage to board.
You need to check the trigger switch wires where they connect inside the welder. Over time the tiny little wires in the cable can get stressed and break. Way less often the switch inside the gun handle gets broken or misaligned.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
There are several things that could cause this:
1. The relay (contactor) that switches on the arc is not closing and it could be bad.
2. The diodes in the power supply are bad.
3. The low voltage transformer is bad.
check the return wire from the hand trigger has been connected to the speed motor wire. Check for a fuse in the system. I have just wrecked a 190 amp welder and I noticed the feed motor assy. was fully insulated from the welder body. Check that out as well as it may be shorting out and not driving the motor.
Did you ever figure this out? Mine just did the same thing. Fresh battery. Pulled trigger. Started to run, then just stopped. Don't know if it's the switch, motor or something else.
I am having the same exact problem on an old Hobart Beta Mig 200
sometimes i can weld for 5 minutes and other times as soon as I hit the trigger it trips the 50amp breaker. Any help?
Try to short the trigger wire back closer to the unit or better still inside the panel somewhere. There is often a relay that is operated that allows gas to flow and power to the wire feed motor. Check where the trigger wire goes it may give you some idea. If you can identify the part you can source one and see if it worthwile repairing. Cheers
If you use it regularly, the liner should be replaced about every 6 months. Make sure you get a wiper for the wire. It goes inside the machine, on the wire, just before the feed rollers. It keeps the dust from clogging the liner.
×