My LG 17LX1R had a almost the same problem. Red standby went to green for 1-2 seconds then back to red standy. Turned out to be bad caps on the power supply board. Yours is definately going to need to be opened up. Not a generic fix. You gotta ask yourself if its worth fiixing a 6-7 year old LCD tv with limited LCD life. New ones can be had for about $130-150.
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