Welding guides
Parts, troubleshooting, equipment, and life in the trade. Browse by topic or search below.
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Lincoln Magnum PRO Gun Liner Replacement Guide: Wire Drag, Burnback, Birdnesting, and Fitment Checks
Wire drag, repeated burnback, birdnesting, debris and sensitivity to gun-cable bends are reasons to inspect the wire-feed path. They do not prove that the liner is the only fault. Replace a liner…
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Lincoln POWER MIG Wire Feed Troubleshooting: Drive Rolls, Liner Drag, Contact Tip Burnback, and Spool Tension
Lincoln POWER MIG wire feed problems usually start in the feed path, not the control board. If the wire stutters, surges, slips, birdnests, burns back into the contact tip, or feeds only…
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Millermatic 355 Wire Feed Troubleshooting and Bernard BTB AccuLock S Compatibility
If a Millermatic 355 has wire stutter, burnback, birdnesting, poor starts, heavy spatter, or aluminum feeding problems, start with the wire path and gun setup before replacing boards, drive motors, or control…
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Millermatic 252 Wire Feed Troubleshooting and MDX-250 Consumable Compatibility
If a Millermatic 252 has wire stutter, burnback, birdnesting, poor arc starts, heavy spatter, or drive roll slipping, troubleshoot the complete wire path before replacing electrical parts. The machine is a MIG…
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Millermatic 142 Wire Feed Troubleshooting and MDX-100 Consumable Compatibility
If a Millermatic 142 stutters, slips, burns wire back into the contact tip, birdnests at the feeder, or makes heavy spatter, start with the wire path before blaming the control board or…
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PAPR Welding Helmet Airflow Troubleshooting: Low-Flow Alarm, Filter Loading, Hose Leaks, Battery, and Blower Checks
If a PAPR welding helmet has weak airflow, a low-flow alarm, fogging, heat buildup, or reduced breathing comfort, stop welding and troubleshoot before continuing. A PAPR depends on a battery-powered blower, correct…
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Welding Helmet Flickering Shade Troubleshooting: Auto-Darkening Lens, Sensors, Batteries, Sensitivity, and Delay
A welding helmet that flickers between light and dark during welding should be removed from service until it passes a safe function check. Flickering shade is usually caused by weak batteries, blocked…
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Plasma Electrode Pitting Causes: Air Quality, Gas Pressure, Amperage, Standoff, and Consumable Wear
Plasma electrode pitting is normal wear until the pit becomes deep, off-center, or rapidly destructive. The electrode contains an emitter insert that erodes during cutting. A small centered pit is expected. Fast…
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Plasma Drag Shield Compatibility Guide: Torch Family, Amperage, Nozzle, Retaining Cap, and Cut Mode Checks
A plasma drag shield is not a universal cup. It must match the torch family, amperage range, nozzle, electrode, retaining cap, and cutting mode. If the wrong drag shield is installed, the…
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Plasma Cutter Pilot Arc Failure Troubleshooting: No Start, Weak Spark, Arc Dropout, and Torch Consumable Checks
Plasma cutter pilot arc failure usually comes from worn consumables, poor air supply, incorrect torch assembly, a bad work lead path, torch safety-circuit problems, or internal pilot-arc circuit failure. If the torch…