No Laser Output During Processing or Pulse Test: VertiGo Series Guide

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No laser output on a VertiGo—where the head moves normally, the fans spin, but no beam ever reaches the material—is almost always traceable to one of seven specific points in the machine, checked in a specific order. This guide walks through that exact order, from the cheapest, easiest checks to the more involved electrical tests, so you fix the real cause on the first pass instead of guessing.

1. What "No Laser Output" Actually Means on a VertiGo

Before diagnosing anything, it's worth confirming you're dealing with the right problem. This guide is specifically for one fault pattern: during processing or a manual pulse test, the laser head moves correctly, the cooling fans spin normally, but no beam ever reaches the material—no mark, no burn, nothing.

That's a meaningfully different problem than a machine that won't power on at all or one that moves erratically. If your head and fans are behaving normally and only the beam itself is missing, the cause sits somewhere in a specific chain: the software's power setting, the optical path, the pre-ignition sequence, the power supply, or the RF laser tube itself. This guide checks each of those, in the order that finds the answer fastest.

2. Before You Start: Tools and a Safety Note

You'll need three things on hand: a small scrap piece of wood, a multimeter, and a spare standard Ethernet cable.

A genuine safety note before going further: Several steps below involve opening the rear panel and measuring voltages, including a power supply that can read up to 220V or 110V depending on your setup. If you're not comfortable working around mains voltage or handling internal wiring, it's completely reasonable to stop after the software and temperature checks and contact OneLaser support for the rest. There's no downside to having a technician handle the electrical steps if this area isn't your normal territory.

If you do continue, always power the machine off before touching internal connectors, and only take voltage measurements when a step explicitly asks you to do so with the machine on.

Step 1: Check Your Layer Power Settings First

This is the fastest possible fix, and it's worth ruling out before anything else. Open your file and check the laser power percentage set on the active layer.

A power setting that's accidentally too low can make a fully functional machine look like it's producing no laser output at all, when it's actually firing at a level too faint to mark your material or register visibly.

If your power setting looks reasonable and you're still getting no output, please proceed to the next step.

Step 2: Confirm the Operating Ambient Temperature

Remove the rear panel of the VertiGo and verify the temperature in the space around the RF laser tube. It needs to stay between 0°C and 35°C to operate normally.

Running outside that range—a cold workshop in winter, an enclosed space that's overheated in summer—can trigger a safety cutoff or cause erratic behavior, including a total lack of laser output from the RF tube. If your environment is outside that window, address that first; it may be the entire explanation.

Step 3: Test for Direct Output at the RF Tube Aperture

This single test tells you which half of the machine to focus on for everything that follows.

Place your small piece of wood directly in front of the RF tube's exit aperture—not on the work bed, right at the source. Press the Pulse button on the control panel to fire a test pulse directly at that close range.

If you see laser output here: the RF tube itself is working. Your fault is downstream—a beam path misalignment or a damaged optical component between the tube and your material. Skip to Step 4.

If you see no output here, even this close to the source: the problem is upstream of the beam path entirely—the RF tube itself, its wiring, or its power supply. Skip ahead to Step 5.

This branch point is the most efficient thing you can do early in the process, since it immediately reduces the remaining troubleshooting by half.

Step 4: Inspect Lenses and Beam Alignment

If Step 3 confirmed that the tube itself is firing, the issue is somewhere in the optical path between the tube and your material. Inspect every mirror, the beam combiner, and the focus lens along that path.

Look specifically for cracks, burn marks, or significant physical damage. Any one of these on any single optic can block the beam from ever reaching your work surface, even though the tube is firing perfectly well at the source. A damaged or badly misaligned optic is a common, and often overlooked, explanation for a machine that seems to "have no laser output" when the real problem is a beam that never makes it past a broken mirror.

Step 5: Check the Pre-Ignition Status Lights

If Step 3 showed no output even at the tube itself, this step is where you continue. Normally, you should hear three beeps roughly 45 seconds after powering on the machine. If you don't, open the rear cover and locate three indicators on the control board: D5, D2, and D1.

Normal status: all three should be off. If they're all dark and you're still getting no output, move on to Step 6.

D5 solid on: this indicator points to a voltage anomaly, meaning you'll want to move directly into the power supply check in Step 6.

D2 solid on: the RF tube has overheated, and the laser is being deliberately locked out as a safety measure. Please stop and wait 4 to 5 minutes for it to cool before trying again.

D1 solid on: the machine is still sitting in its pre-ignition phase and simply needs more time. Wait a few extra minutes before assuming there's a fault at all.

If none of the three explains it, locate the gray Ethernet cable connecting the fan control board to the RF tube. Unplug both ends and reseat them firmly—a loose connection here is a surprisingly common, low-effort fix. If the problem persists, swap in a cable you know is good, since a damaged Ethernet cable can silently interrupt this connection without any obvious external sign.

Step 6: Inspect the Power Supply Unit

Get your multimeter ready. Locate the power supply and check whether its green LED is lit.

If the green light is solid on: measure across the +V and -V terminals. A healthy reading is 48V. If the reading is significantly different from 48V, it confirms that the power supply itself is faulty.

If the green light is off: measure the input voltage across the L4 and N4 terminals instead. That should read 220V or 110V, depending on your setup. If the input reads correctly but the green light still won't come on, the power supply unit itself is defective. If the input voltage is also abnormal, the problem is further upstream, in your main power wiring rather than the laser system itself.

This step is a genuine mains-voltage electrical check—proceed only if you're comfortable with that, and refer back to the safety note above if you're not.

Step 7: Inspect Wiring and Terminal Connections

With the machine powered off, locate the FanCtrl board and confirm every wiring connector on it is firmly seated—a connector that's slightly loose can produce exactly this kind of intermittent or total signal loss without any visible sign.

With the machine powered on, use your multimeter to measure across the L-ON and GND terminals on that same board. A healthy reading is 5V.

While you're in there, check the primary positive and negative power cables running to the RF tube itself, and confirm those terminals are securely fastened as well. Loose power connections at the tube are a realistic cause of intermittent or total output loss that's easy to miss on a quick visual check.

Step 8: Isolate and Test the RF Tube Directly

This procedure is the most technical step in the sequence, and it exists to answer one specific question: is the RF tube itself actually broken, or is a signal problem elsewhere making it look that way?

Take your spare Ethernet cable and cut off the RJ45 connector on one end. Strip the insulation from wires 1 (orange-white), 3 (green-white), and 7 (brown-white), and twist those three wires together to form a short. That modified end stays disconnected—it never plugs into the mainboard.

Plug the untouched RJ45 connector on the other end directly into the network port on the RF tube. Power the machine on and wait 42 seconds for the pre-ignition cycle to finish.

If the laser fires normally with this direct connection: the RF tube itself is fully functional. The actual fault is in the mainboard or the control signal path leading to the tube, not in the tube itself.

If you still get no laser output even with this direct, isolated connection: the RF tube is genuinely faulty and needs to be replaced.

This test is deliberately the last step in the sequence, since it requires cutting and modifying a cable and involves the same mains-adjacent electrical territory as the earlier power checks. If you've gotten this far and aren't fully confident modifying wiring yourself, this is a very reasonable point to hand the machine to OneLaser support with everything you've already ruled out documented for them.

When to Stop and Contact Support

A few honest signals that it's time to bring in support rather than continue solo: you're not comfortable with mains-voltage measurements, you've completed Steps 1 through 5 without finding an obvious cause, or the RF tube isolation test in Step 8 confirms the tube needs replacing. None of those are failures on your part—some parts of this diagnostic chain genuinely call for a technician, and knowing where that line sits is part of doing your job safely.

FAQ

Why does my VertiGo show no laser output even though the head is moving? This means the motion system and fault are independent—the beam itself is the problem, not the machine's overall function. Work through the settings, temperature, and beam-path checks above in order.

What does it mean if my machine beeps three times but still won't fire? Three beeps around 45 seconds after power-on indicates a normal pre-ignition sequence completed. If you still get no output after that, move to the direct pulse test at the RF tube aperture in Step 3.

Can a low power setting really cause a total lack of visible laser output? Yes—a power percentage set too low can produce a beam too weak to mark your material or register as any visible output, which looks identical to a hardware fault until you check the software setting first.

Is it safe to test the power supply myself? Only if you're comfortable working around mains voltage. If you're not, this is a reasonable point to stop and contact OneLaser support instead of continuing.

What does it mean when the D2 LED stays solid on? It indicates the RF tube has overheated and the machine has deliberately locked out laser output as a safety measure. Wait 4 to 5 minutes for it to cool before testing again.

How do I know if the problem is the RF tube or something else entirely? The pulse test at the tube aperture (Step 3) and the isolation test (Step 8) are both designed specifically to answer this question. If the tube fires when isolated and directly connected, the tube is fine, and the fault is in the mainboard or signal path instead.

Bottom Line

A VertiGo producing no laser output during processing or a pulse test is a solvable problem with a clear diagnostic order: settings, temperature, a direct pulse test at the source, the pre-ignition LEDs, the power supply, the wiring, and finally the RF tube itself. Working through these in sequence, rather than jumping straight to replacing parts, is what actually finds the real cause—and knowing when to stop and call in support is just as much a part of doing the job correctly as running the tests yourself.