Hi all. Let me jump right in. I have a 100watt laser cutter. Chinese model Ruijie. I have been cutting with it just over 2 years and it's been working like a dream. A few days ago i switched on and prepared to cut something, only to notice that it was cutting as if set at a very low wattage. After testing and retesting it was still the same. If I pulsed it there was nothing. I contacted the company and explained my problem. He suggested replacing the tube. This I did, the new one had little pins on either end which I had to solder the electrics onto. All done and water connected, I proceeded to switch on. It tripped the plugs breaker and I switched everything off. After putting the breaker back up and switching on again, everything came on, meaning blower fan and extractor fan and chiller. But the control board is dead as in all control on the bed itsself, if that makes sense. Its as though I haven't switched it on yet. Now I am told to replace the power supply, which I assumed is the biggish box with the fan on? But he tells me it is a small little box. I am very confused and have ordered what he advises but am still not sure if I am doing the right thing and if I have damaged the tube in any way. If anyone could give some advice I would appreciate it greatly.