To find out the possible technical reasons for the problem & to find out a solution.

Onida Kyrock TV, Horizontal lines observed after switching in display screen. By gentle tapping the lines vanishes. Further the colour of the screen become black & white. Againswitch on & off causes the colour to be in order. Can somebody forward the circuit drawing for the Onida TVs or indicate the source for getting the Tv circuits. can some body indicate the pactical solutions for the same.

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