Bobcat T590 with limp joystick

Got a bobcat with under 70 hours. Scraping sod for about a half hour and had the left joystick go totally limp. It falls forward and left track has no power. I have hand controls but I assume the problem is either in the hydraulics or the steering linkage. Maybe a power issue but seems unlikely. Is it possible I'm missing something stupid? Searched various forums and couldn't find anything related. I can't get service until next week and was hoping to get work done over the weekend. Thanks...

Bobcat T590 with limp joystick

Bobcat T590 with limp joystick