32" Polaroid flat screen TV has sound but no picture just black screen. How do I fix it

Are you able to pull up the menu? Is it under warranty? Have you checked the connections? Have you tried unplugging it for about a minute or two and plugging it back in?

Not able to pull up anything black screen, no warranty, checked connections, tried unplugging, still not work

Well, it could be any number of things. If you can see the picture but extremely faintly (usually by using a flashlight on the screen), then it's likely an inverter. At any rate, fixing it is going to cost more than it is worth.