If you see thus, check the antenna connection for firmness first. If it seem correct, the tuner to your set is faulty. Does not process the RF signal. There is no repair to this, other than replacement. Contact any service technician to replace it. If you wish to get some details; check the site linked here.
Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
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