yes there is a limit for wall mountedflat screen tv, usually they will say what their limit is on the box. since depending on the size of the tv you will have to buy a wall mount accroding to it.
Amazon does sell flat screen TV mounts but it would depend on what manufacturer of television you had brought from that would determine whether you would be able to get one that you require.
The typical wall mounts have a weight capacity of 15 to 75 kg. However to be on the safe side choose a wall mount which is rated for a maximum weight capacity of at least 50% more than the TV weighs.
To wall mount a flat screen tv, you will need a power drill, measuring tape, a level, a pencil, and possibly a stud finder and a screwdriver, and you should really have a wall mount kit as well. A...
The better you can mount a flat screen TV, the better for your TV. Hitting the wall studs is always a preferred choice. Just hanging a set through the dry wall or plaster is inviting a catastrophe...