First check the screen wire screen driver circuit SU board.3H5service manual download site

    Turn on the TV back cover, carefully screen for the SU board assembly lines were checked and found a group of Su plate line plug is not in place on the screen, turn off the TV, take anti-static gloves, loose on the screen line plugged , power test machine, the screen disappears on Black Belt TV back to normal.3H5service manual download site

    Horizontal black bands on the screen line causing the reason is not just SU board appears on the screen is bad, SU board itself is faulty, the internal screen (screen on screen line interface) or there is a fault on the screen line break will occur title faults.3H5service manual download site
 3H5service manual download site

 3H5service manual download site
    Recently, some of the principles of inspection and maintenance of information on plasma TV's, learned of different brands (such as Panasonic, Samsung, LG, etc.) the structure and mechanism of circuit failure broadly similar plasma screen, fault determination method is basically the same. Troubleshooting steps to overhaul the level of black belt: First check the SU board (Samsung screen for the Y plate) on the screen line, if normal, the fault in the SU board or plasma screen itself. If the oscilloscope by measuring the output waveform to determine SU SU board board is faulty, if not only replace the SU board oscilloscope or plasma screen, in order to troubleshoot.3H5service manual download site