I looked at mine out of curiosity and found no label telling me manufacturer or model of the lift mechanism.
Might be easier to just replace the entire thing. Google finds several options for around $150 for that size of TV.
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD 4dr short bed Duramax w/allison
Reese Fifth Airborne air ride king pin coupler with Sidewinder