Hydraulic problems on a hyundai 130lc-3

Having issues with hyundai 130lc-3. The machine has a fabtek harvester head on it.was cutting wood and suddenly lost all hydraulic function. It's as if the safety lever is turned off. Machine starts but no function in the joysticks or travel pedals. Replaced solenoid for small valve for pilot pump but still have no operation. Where to next? Any help appreciated. Thanks

Hydraulic problems on a hyundai 130lc-3