Trying to set up the TV for digital change over I selected something that causes only snow on most channels. Three annalog channels do come in but are very snowy. I can not find the menue to change this selection back. We are using a magnavox converter box.

Thank you..

Hope this helps

This is the first time, correct?

It worked once, correct?

What's the model of the converter box?

Are you using the coax input and output?

Is your TV and the converter box set to the same channel (3 or 4 NTSC)?

Are the cable connections tight?

If you have a second converter box, does it work for that TV?