The YAG laser power supply is the part of the welder most owners never see and blame last — usually after the lamp, the lenses and the chiller have all been cleared. Yet it decides the three things your welds actually depend on: how hard each pulse hits, how fast pulses arrive, and whether yesterday’s…
A black weld seam — or a porous, gritty, sooty one — is the shielding gas system telling you it is not doing its job. The laser is usually fine. Molten metal at 1000°C+ reacts with oxygen, nitrogen and hydrogen in the air, and whatever the gas fails to keep away from the pool ends…
The water chiller on a YAG laser welder is the machine’s quietest component and its most common false accuser: when the chiller alarms, the laser refuses to fire, and the workshop concludes the laser is broken. It almost never is. Four things trip a chiller — flow, temperature, water quality and condensation — and each…
A laser welder won’t turn on in the morning and the whole bench stops. Before you assume the worst: the majority of dead-machine calls come down to mains power, a safety circuit doing its job, or the chiller refusing to give permission — none of which are broken components. Check in this order. Unplug before…
A xenon lamp replacement is the one repair every YAG laser welder owner will eventually do — the lamp is a consumable with a finite shot life, not a defect when it wears out. Done calmly, the swap takes twenty minutes. Done carelessly, it costs you a lamp, a week of downtime, or a shock….
A laser welder not melting wire the way it used to — or not melting it at all — is almost never a dead machine. Filler wire feeding is a chain of small alignments, and the laser only sees the last link. When the wire will not melt, or melts unevenly, the cause is nearly…
The fastest way to good welds on a new jewelry laser welder settings sheet is to stop treating settings like a secret recipe. There are only three dials that matter — voltage, pulse frequency and spot size — and once you understand what each one does physically, you can dial in any metal in a…
A jewelry laser welder repair bill is rarely about the part. It is about the decision: which repairs you can safely do at your own bench, and which ones hand a working machine to a stranger with a screwdriver. We build and service these machines, and here is the honest dividing line we give every…
You step on the pedal and nothing happens. No laser output from a YAG laser welder is the fault that stops a workshop fastest — and it is also the fault with the highest ratio of “simple cause” to “scary symptom”. Work through the seven causes below in order. Each one either fixes the machine…
Most “broken” laser welding machines are not broken. A laser welding machine troubleshooting session that follows a fixed order finds the cause of the most common faults in under twenty minutes — and the fix is usually a setting, a cleaning, or a consumable, not a repair. This checklist is the same order our own…