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Horinzontal line at centre of HP monitor 5502

I have resoldered the vertical IC TDA4386 A ; also I changed the IC and checked but the problem is the same . Also checked for the voltages on the IC which seemed to be ok . Which are the points required to be checked .

Kindly help for the same.

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Get the schematic for you tv then read all ofthe circuit values; chances are your horizontal output transistor is bad.

Posted on Jul 14, 2010

  • Jim Goldsmith
    Jim Goldsmith Jul 14, 2010

    sorry I meant Vertical output transistor circuit!
    the horizontal line indicates that the picture is good horizontaly but, is not opening vertically.


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