1. High-voltage ignition, the joint of the high-voltage line is too close to the iron shell part.

2, no light, the fan does not rotate. The fuse is blown.

3, it can be forced to emit light, but it cannot be controlled by the main board. The front low-voltage control part is broken.

4, the current cannot be adjusted, and the current control part is broken.

5, the fuse is always blown, which is a short-circuit of the power tube.

There are several ways to repair the laser power supply:

1. The method of replacing key components. Generally, it does not emit light. You can change the amplifier tube 460 or 450 first, and then consider changing the high-voltage package.

2, voltage detection method.

3. Electric observation method.

CO2 laser power supply does not emit light maintenance skills:

1. Turn on the power and observe the failure point of the laser power supply.

2, first determine whether the cooling fan is rotating: if the fan rotates, it means that the high-voltage circuit part is faulty; otherwise, the fan does not rotate, it means that the control circuit part is faulty.

3. When the fan is running, check whether there is voltage in the output of the 220V power supply after rectification, and then check whether the power amplifier tube is burned out, and whether the voltage after power amplification is normal 400-600V DC pulse, if it is normal, it can be concluded that it is a high voltage package If it fails, replace it.

4. When the fan is not running, check whether the voltage after the bridge rectifier voltage is normal, and then check whether the voltage after the transformation is normal, usually the control chip is prone to failure.