Top of tv has 3 colored lines and about 3 to 4 inches of the pictures is wavy.

My husband and I got a JVC AV-50D501 given to us recently. It works fine but it has three colored lines at the top and about 3 to 4 inches at the top of the picture are wavy. The picture is also dark. We have ordered a referbished remote but not sure if these problems are going to be costly or not. If you can tell me anything about this we would greatly appreciate it. Thanks.

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