How do I get from 480 to 1080p on my tv? I have an HD box on my vizio 42 inch tv but my channels are still showing 480?

panel problem >.

Usually a TV that pixelates only on some channels is a problem with the signal levels coming into the TV or the cable box. If you are using a cable box then definatley the signal is the issue..

my vizio 42 inch plasma want show a picture. i turn it on i can hear the volume but no pictures, whats the problem

You can program most satelite remotes to work on any device. Most are universal. If not, I suggest purchasing a universal remote. You can view remote codes online to program your device to your remote. New ones come with instrucions and codes.
Let me know how I can further assist you if necessary

Try pressing the MTS button on your remote while on the channel that does not have audio and select stereo. Most likely this will be set to SAP (secondary audio programming) and there is no SAP programming on that show. This is not something that could be avoided. It was during the channel scan, it locked in the SAP audio broadcasts for some reason.

i solved this by enlarging the picture size through setup, or the V-position.

you might have an overheating problem- make sure you have adequate ventilation around your tv

I also had this channel 5-1 freezing problem and spoke with Vizio support a few times. They thought the problem was the SSID code from the local CBS station and said they would try talking with them. I am not certain if they did this or not, but, as of mid December, my Vizio no longer has this problem.

I had the offset left issue for non-HD channels with my Panasonic 42" plasma, using Comcast HD cable box. Went into the configuration menu (to get there with the newer Comcast boxes, you have to turn the box off, then hit the menu button on the box immediately after). You will see on the menu a resolution (probably says 1080i), then below it a "4:3 override". Our said 480i. When I changed it to "none", so that it stayed 1080i, it worked! It also works by selecting 480p, but then the picture is stretched.

First of all we need to know if you are working off of an audio system or off of the tv speakers and its built in amp. Answer this and I will get back to you.