Replacing power supply

CO2 Laser Cutting & Engraving Laser Power Supply
1

I had a MYJG 100 and it died so I ordered another one. This one looks the same but is marked as a M 100 not a MYJG. All the wiring looks the same so I just removed the old one and put in the new one. Well it doesn’t properly. If I hit the test button on my controller TRocen 708C the laser never turns off, If I run a file again the laser never stops and appear to be running solid, never turns off. What in the heck could be doing this?

Please help

2

another thing is that there is no switch that is supposed to control the external ammeter. My old one has a switch and a built in ammeter.