The laser tube emits pink light, no output, and it is impossible to mark the paper in front of the light outlet. Is this laser tube broken?

1.Solution:Replace with clean water and test again; try to adjust the power supply current to meet the working current requirements of the laser tube of this specification. If the laser tube does not change after adjustment, consider the aging of the laser tube gas and replace it with a new laser tube.
2.Analysis:The impurity of the water generates a magnetic field around it, which affects the light emission.