Good evening My 2017 Kobelco just lost all hydraulic control control few days ago Nothing works I’ve unplugged the solenoids and it would code plug back up code clear There’s a few other valves with sensors I’m not sure The safety on the side of the sit beeps as it should when pushed down to turn on all functions Is there anywhere else I should be looking before completely trying to pull the pump or coupler I appreciate any help
Check if heat is being generated from pump or hydraulics you should be able to feel oil rushing through hoses , pull one off the pump output and just crank it quickly and see if something comes out. Otherwise I'd be checking work equipment lock solenoid