Every fault guide below follows the same rule we use in our own service department: check the cheap and safe causes first, and know the line between a bench fix and an engineer’s job. These are laser welding machine troubleshooting walkthroughs written for working jewelers — no login, no email wall, just the checks we would run ourselves.
The guides
- The Complete Checklist — start here. One symptom, one section, seven fault families in the order our engineers use.
- No Laser Output: 7 Causes, Checked in Order — the machine is silent or fires nothing; work from E-stop to power supply.
- Repair: What You Can Fix Yourself and When to Stop — the honest dividing line between consumables and lethal voltages.
- Settings for Gold, Silver and Platinum — starting points per metal and the one-dial-at-a-time tuning loop.
- Not Melting Filler Wire? Three Things to Check First — spot, energy, wire path: in that order.
- Xenon Lamp Replacement: Signs, Steps and What Not to Touch — when the lamp is really due, and the two mistakes that kill new lamps.
- Won’t Turn On: Power, Interlock and Chiller Checks — most “dead” machines die at steps one to three.
- Water Chiller: Alarms, Condensation and Water Quality — flow, temperature, water and dew point, told apart in minutes.
- Black or Porous Seams? A Shielding Gas Guide — purity, direction, flow; ten minutes to fix.
- YAG Laser Power Supply: Voltage, Frequency, Stability — what the supply controls and how to read instability.
Also worth reading
- Xenon Lamp Life: When to Replace the Lamp
- Laser Welder Trips the Breaker? Usually the Power, Not the Machine
- Condensation on the Laser Lens Is Not a Fault
- What a 2-Year Warranty Actually Covers (and What It Doesn’t)
Send us the fault and we’ll tell you what we’d check first
Send what your machine is doing, the material you weld, and a short phone video of a test fire. An engineer — not a salesperson — replies with the first things we would check, whether or not the machine is ours.
CN Laser · Guangzhou Centro South Tech
WhatsApp: +86 185 2016 7321 · Get a quote · PG-LN200W spec