Quote Originally Posted by 369WIERDO369 View Post
If it was put together wrong or a pin problem, wouldn't it do it with every game? Worked flawlessly at the store -- I'm beginning to think the games just need more cleaning...maybe some alcohol or something.
The TV is fairly older. It's a CRT. I don't bother with flat screen TVs if I don't have to.
If all games worked flawlessly in the store, and all games have wavy lines at home, I'd bet safe money that your TV doesn't like the NES.

Cleaning the games doesn't typically help with video output issues unless you're talking about graphical "glitches" that could be the product of the 72 pin connection not completing properly to transmit data. But "wavy lines" sounds like a video output issue.

Again, try a different TV and see what happens.