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Samsung Plasma tv Horizontal white lines on screen

Discussion in 'Troubleshooting and Repair' started by ron127, Jul 4, 2011.

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  1. ron127

    ron127

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    Jul 4, 2011
    I have a HP-S5073x 50 inch Samsung plasma tv that has picture but with white horizontal lines on the whole screen. No sound or power issues. Thinking its the Y-sustain board or upper and lower buffer boards. Here's a pic.

    Thanks
    ron
     

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  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,411
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    Jan 21, 2010
    Do you have a digital or analog tuner. That looks like interference on an analog signal.
     
  3. ron127

    ron127

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    Jul 4, 2011
    Lines are still present without any inputs. digital
     
  4. davenn

    davenn Moderator

    13,619
    1,882
    Sep 5, 2009
    how old is this TV ? if more than ~ 5 years it may well be having power supply issues.
    its quite possible that there are a few electrolytic capacitors that have dried out and are no longer correctly providing filtering on DC rails, thus causing AC "Hum' problems that have become apparent on the picture

    cheers
    Dave
     
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