1, the upconverter is faulty and needs to be replaced;
2. The tungsten wires at both ends of the lamp tube are burnt out (both ends are black) and need to be replaced;
3. The ballast or electronic ballast is out of order and needs to be replaced.
If you are not sure why the light is not on, then find a professional maintenance person to solve it.
2. Laser welding machine, also known as laser welding machine and laser welding machine, is a machine for processing laser materials. According to its working mode, it can be divided into laser mold welding machine, automatic laser welding machine, laser spot welding machine and optical fiber transmission laser welding machine. Optical welding uses high-energy laser pulses to locally heat the materials in a small area, and the energy radiated by the laser diffuses into the materials through heat conduction, so that the materials are melted to form a specific molten pool, thus achieving the purpose of welding.