Saratoga Gear did not retract.

[pmateychak]

I took our Saratoga up for a night flight to adjust all the panel lighting, and to my surprise, the gear wouldn't retract after takeoff. We have the hydraulic relief valve emergency system with no auto-extend. The "squat switch" appears to be in working order. I'm most likely going to have to put the airplane on jacks to troubleshoot further. Just wondering if anyone has had a similar problem and common failure points. I should mention, after selecting gear up, the three green lights remained on and the "gear unsafe" light did not illuminate.

 

[flyguydon]

 

[flyer2160]