I have a 3 year old 42 inch Samsung Plasma TV and I am able to see a picture and hear sound when playing a DVD. However, when trying to look at my Cox cable channels, there is no sound or picture. Why is this happening and is this an easy fix?
If you are using a cable box make sure that is connected. If you are connecting the cable wire directly to the TV then you will need to run a channel scan and see if the TV will pick up the channels. If the TV does not have a QAM cable tuner for digital cable and they switched to this you would not see anything.
Call Cox cable and ask them if they have made this change.