My TV continually freezes, especially on the upper channels, my guide often doesn't work, I can't access my DVR shows.

[jbogaert]

I have tried all the trouble shooting techniques.  Nothing works for more than a short period of time. 

[dexman]

Can a quick summary of what has been already tried be listed?  I have a thought, but I don't want to make the suggestion if it has already been done.

[clem21]

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@jbogaert wrote:

I have tried all the trouble shooting techniques.  Nothing works for more than a short period of time. 

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Like dexman said, details are important for us to help you. It could be an equipment or wiring failure, but without knowing what you have done, we can't help.