Question about Sony KP-51HW40 51" Rear Projection Television

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Red horizontal lines about 5 ml apart same fine line problem

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You can try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC power and redo the cabling. Switch on the TV and see if it works..

Good luck...

Posted on Nov 06, 2008

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Hi after disassembling it you find 2 tuners left of it will be fine tuning adjust it it will be ok

Posted on Nov 06, 2008

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Have you tried unplugging your tv for 30 minutes and plugging back the power chord to tv .

How old is your tv ?

Posted on Nov 06, 2008

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  • Sony Master
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Sounds like a convergence problem.

Try first unplugging the unit for thirty minutes or so.

Also check aerial cable.

If the TV is still faulty, then you will probably need to replace one of the STK ICs that control convergence.

Posted on Nov 06, 2008

  • Ginko
    Ginko Nov 06, 2008

    A technician need to take the TV apart, access to the convergence board and test the two convergence ICs, by checking continuity on the pico fuses at the base of the ICs.

    If the convergence board is Ok , then it is probably a vertical deflection circuit malfunction, in that case the repairman must test the vertical deflection circuit malfunction.

    A good idea could be purchasing a warranty extension from Sony.

    A warranty extension is generally less expensive than a single repair job, and will cover your TV for an extra year.

    If you want more information call Sony at the number listed on the owner manual or enquiry online by clicking here.


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Posted on Jan 02, 2017

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