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Piet Pompies Posted on May 18, 2012
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I am looking for the wire speed circuit board skematic on a Metabo MIG WELDING MACHINE 170/30

The there was some dry joints on the wire speed dial circuit board which I re-soldered but one resistor/ was missing and i am trying to find the original missing resistor. Only the two holes where it was located are visible. the circuit board was made by GDI electronic but nothing their site show towards it

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  • Master 504 Answers
  • Posted on May 18, 2012
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5 Related Answers

Anonymous

  • 92 Answers
  • Posted on Jan 23, 2009

SOURCE: need wiring schematic for miller 140 wire feed welder

No problem,email, write or phone for this information, Miller personel are very obliging as are most Welding manufacturers.

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Anonymous

  • 4 Answers
  • Posted on May 25, 2009

SOURCE: Welder not welding

SOunds like your ground is not connected solidly either inside the machine or at the ground clamp. Check to make sure the ground wire at the clamp is not broken then make sure the ground wire is connected solidly inside the machine.

Anonymous

  • 2 Answers
  • Posted on Jun 28, 2009

SOURCE: Toolex 140 mig welder, wont feed wire.

You may have the scew settint your wire tension set to tight. Try loosening the tension and if that doesnt work check the eletrical wire that supplies the power to the roller and make sure it hasnt become disconected.

Anonymous

  • 225 Answers
  • Posted on Jul 29, 2009

SOURCE: I have a Blue Point Industrial mig welder,model

try readjusting your feed rollers(tension),plus make sure that your feed rollers are set for the right size wire your using.

Anonymous

  • 1 Answer
  • Posted on Sep 04, 2009

SOURCE: Lincoln Pro-mig 175 w/ no wire feed but relay clicks fan runs

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} The problem with my MIG 175 Pro is the "voltage selector switch" (part # M15750-1). I took it apart and saw all of the contact points where corroded. I can hold the knob between two settings and the machine will work.

I have the same issue only after about a year of very light use. I am not sure how to prevent this from happening again.

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Related Questions:

0helpful
3answers

What is the difference between TIG & MIG welding?

MIG welding is also called Metal inert gas welding, gas metal arc (GMAW) welding. MIG welding uses an arc of electricity that creates a short circuit amidst a constant anode and a cathode. The short circuit produces heat and a non-reactive gas. This melts metal, enabling it to be mixed together. After the heat is removed, the metal cools down and then solidifies, creating new fused metal. MIG wire is used in MIG welding. Tungsten inert gas (TIG) welding utilizes a non-consumable tungsten electrode that produces the electric arc for the weld. Unlike MIG welding, TIG welding does not require additional metal to be added.
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Miller Auto Deltaweld 452 has permanent weld output and the A22 wire feeder stays on at full RPM when the machine is turned on. We use this welder for basic MiG welding.

The wire feed drive circuit board has a short circuit scr or other component. You will probable need to get a new board. Robert
0helpful
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I have a Rossi 100 amp mig Gasless, has no grunt to weld with.

turn up the voltage regulator
the more volts the more amps available
check for proper;y connected ground
make sure that you have the ground wire connected correctly to the machine
ground and live are reversed for gas less operation ( in the user manual)
1helpful
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A snap on mm250sl that i cant control the wire speed feed, from 4-10 on the dial it runs full speed, from 4 down it does nothing. ive had this welder for 20 plus yrs with no problems till now

The wire speed knob does more than control the wire speed. As the wire speed is increased the welding power must also increase and the circuitry to do this and keep things in sync is fairly complex. The fault is probably within that circuitry and the repair will require no small amount of skill and test equipment or a replacement circuit board.

Complex electronics can be fairly sensitive to high temperatures and voltage spikes and surges and apart from the natural sort that arrive along the mains electricity supply mig welding is an electrically noisy process that can be quite stressful on those electronics. 20 years of trouble-free operation is quite a good record...
1helpful
2answers

I like to weld 3/16 steel what is bethr to uesd 0.035/0.030 for welding

I prefer .030, The bigger the wire the more heat you need to melt it and get it to flow. 3/16 is thick enough I like to stitch it meaning I aim the wire to the bottom of the crack and then swing to the right then left then back to the bottom and start again and I pull my gun not push. Using the .035 wire I would build a lot of heat and burn through in a short distances. I would guess I would not go to .035 till I hit 3/8 of a inch.
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Can not get the wire feed adjust speed checked feed potemeomiter and it checks good.Feed potemeomiter is soldered to the board looking for possible causes.

Hi, sometimes the wire gets stuck when feeding through at the copper welding electrode tip piece.. Try unscrewing the welding tip on the welding hand piece to make sure the wire is not getting stuck there. If the wire come through with the tip removed, then screw the tip back on over the wire. See if the wire will feed through a meter or two untill it hits the welding tip.
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My Hobart 140 will not get hot enough to make a weld. It will feed out the wire, make a spark, and the flux core wire will melt on top of the thin rouaght iron square tube fence but it will not melt into...

Hi:
Sounds like you have the wrong polarity in your machine. If you are using flux core wire, make sure to connect your ground clamp to the positive side and your gun to the negative side. Dial the right voltage and wire speed according to wire size and metal thickness.Let me know if this help.
Regards,D.S.
0helpful
1answer

The welder fan is running and when i push triger air flows but wire motor does not run

Check the heat resistor which is located on the circuit board behind the wire speed dial! Looks like a white oblong component and tends to desolder itself through heat on the board! Resolder it back in and it should work again!
0helpful
1answer

Wire slows down during welding and then suddenly jerks back to correct speed.i installed a new board and it did not fix problem. i also checked the brushes on the motor and they looked fine. its a series...

try replacing the potentiometer, this is the variable dial which alters the speed. It should show the value in ohms on the back of the case, these are relatively cheap and can be bought from RS. Its sound like the wiper in the dial is loose.
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