SAMSUNG PDP TV - PS-42Q91H - PS-50Q91H - FAULTY SCREEN SHOTS & POSSIBLE DEFECTIVE COMPONENTS - TROUBLESHOOTING PROCEDURES BY ASSEMBLY

FAULTS AND CORRECTIVE ACTIONS

• A blank vertical cell (block) appears on the screen.

1. Address buffer defect.   Replace the corresponding upper/lower buffers (E, F)
2. COF defect (burnt).   Replace the module.

• A green screen appears when the TV is turned on.

     The Scale is not resetting.  Replace the Main board.

• The OSD box appears but there is no text.

    Incorrect program version.

1. Check the version of each program.
2. Replace the Main board.

• A blank upper (or lower) block appears on the screen.

    Upper/Lower Y Buffer defect

    Replace the corresponding upper/lower buffers (E, F)

• Either the main or sub picture does not appear.

    Replace the Main board

• A vertical green line appears on the screen.

    The SMPS voltage is incorrect.   Adjust the SMPS voltage according to the voltage printed on the module label.

• Dim screen (blurred in red).

    X-Main board defect.   Replace the X-Main board.

• A blank screen appears.

    Replace the Y-Main board.

TROUBLESHOOTING PROCEDURES BY ASSEMBLY {Click on picture to Enlarge}