Hi,
Sounds like you have a bad convergence circuit, it's what lines up your picture so the colors are correct. Most brands (excluding RCA) use the same basic design. There are 2 big ICs called STKs that normally fail, some resistors or fuses may also go. Its about $300-$400 bucks to have someone repair it. If you want to try it yourself, this link
TVrepair will take you to a site that sells kits with the parts and step by step instructions on how to fix it. Good luck
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