I have an ex120 excavator worked fine up until today started it and it won't do anything via controls sits and idles any help would be greatly appreciated
Sounds like you don't have any pilot pressure for your manipulators. Check the safety lever on the left, front of the arm and make sure when you push the lever down the shaft that the lever is connected to also turns. If it does, you will need to check your pilot system pressure with a gauge.