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I have a 32" Panasonic LCD that when it is connected to Dish Network it has blue vertical lines across the entire screen. If I hook up an antenna to the TV the picture is clear. So I feel the TV is fine. The Dish signal is coming through a coax cable that is connected to a HD DVR (7220 Maybe) I have the Panasonic and another TV connected the that sat receiver. The other TV is fine. It connects through component. I talked to Dish support last night (fun fun) and they are sending out a new receiver. Im not to sure that it is the receiver. I think it is problem in the coax cable (signal loss, interference). Does any one have any thought or experience with this?
 

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It sounds like you have the receiver connected to the tv by coax instead of component or HDMI. If the second tv signal is okay, I would suspect the problem is in the connection between the receiver and the tv. Try changing cables.
 
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