He can only be at either two places: sat in front of the TV way over to the right of the main room, or actually inside that small room trying to fix the satellite dish. You can tell if he's at the dish by going back outside and around the building to the dish, where he'll be wrestling with it.
You were actually able to pick up the wedge and slam the door shut? If so, that should mean he's shut inside the smaller room now.
"Bleat, Watson -- unmitigated bleat!" ~ Sherlock Holmes