New TV problem

My new 27" CRT TV has wavy lines along the sides. I think this is called moire or aliasing. Does anyone know if that means the TV is defective? I think they are always there, it's hard to tell. They can mostly be seen only on gray or dark screens or images.

 

are there any speakers close to it?? this could cause that.

 

There are no speakers anywhere near it, except for the ones installed in the TV.

I'm nearly 100% sure it's a problem with the TV itself, and not an interference of some kind.

I've decided to take it back and exchange it. The only thing I worry about is whether the replacement will have the moire too. With the way TVs are made today it could be a problem with this particular model line. I tried checking out the display models at the store but they're sitting high on the shelves and I can't see the screen good enough.