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Hello, I'm Shahid.Sorry to hear that you're having trouble with this but I'll do my best to help.
1- Could you please get me the model number written on back of TV?2- What video devices/ sources (such as cable box DVD player etc) are connected to TV and does the problem occur on all video input sources?Thank you.
Thanks for the info.
Was there any delayed power up issue prior to this problem occurred in TV?
OK, unfortunately this is power supply board failure and you would need to replace power supply board in TV to resolve the problem. If you have plan to do-it-yourself then reply back to assist you with further info and if you are not comfortable working on it yourself then you may please use following link to get list of TV repair shops in area which will help to get repair quote around $120 to $140...http://www.tvrepairpros.com/I hope these info will help. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.
Please do not post fresh question for same matter and reply here to continue.
Replacement power board would be available around $50 or so and you can add an hour labor charges of TV tech to get it replaced. I hope these info will help. If you have any additional questions, feel free to ask.