Quick way to find out if a laser power supply is still good

******** Dangerous! ******** Be careful if you are trying this method to run the test. I am not liable for any injury or damage that may occur. There were times when a customer said that his laser was not firing. There are always two cases: a faulty laser power supply or a bad laser tube. How do we know which one is bad? It is hard to tell if the laser tube is bad without a power source. So, the first thing I would have to do is test the laser power supply. Again, if you are not a laser pro or do not know lasers, please do not follow me to run the test. If any bad things happen, you take all responsibility