Does it have a loader? and if it does how does the loader and three point work?
If one or both of those has gone south too, then it most likely will be a suction or a pump issue.
If one or both of those works fine with no loss, then most likely it's either the controller or the cylinder, but if you still have steering but it's more of a manual kind, then it's down to the controller.
Get the WSM and it will walk you through troubleshooting and repairing it.