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I have cox and used a hdmi cabel to connect my cabel box directly to the tv. If you did that step it may be time to call Comcast and see if they can help you out.
Sorry, there was a problem. Please try again later.mine is pink and purple also...Hate this TV
Sorry, there was a problem. Please try again later.Up grade your hdmi cable. Recent ones allow more data to flow easily.
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