I am in a rental apartment in an old house from the 1940s. The TV is going up on a wall that seems to be made of approximately 12 mm thick raw pine, 60 mm wide, with a 3 mm masonite sheet on top. The studs that the pine is attached to are some thin material that I wouldn’t call studs. I have a stud finder, and where the studs are, there is a cavity behind; the studs might only be attached at the top and bottom, so to speak.
Question: Can I screw a 80 x 50 cm chipboard with a bunch of screws into the raw pine and then attach the TV mount to the chipboard? The TV mount has an arm, so the leverage is about 50 cm.