Samsung Plasma

SAMSUNG PLASMA DISPLAY - PL42C 91HPX/XAP _ PL50C 91HX/XAP [Troubleshooting by Modues]

SAMSUNG: PL42C 91HPX/XAP & PL50C 91HX/XAZ - PLASMA DISPLAY.

                                                               [Part-2]

 TROUBLESHOOTING PROCEDURES BY ASSEMBEY. SERVICE MODE & DRIVE BOARD TROUBLESHOOTING

1. SMPS-PDP TV: Can be located at the top center of the panel, look
   after back cover opened.  [No Power, Blank Screen, the Relay repeats ON
   OFF.]


2. ASSY PDP MODULE P-X-MAIN: Vertically fitted on the right side of the panel,  look after back cover opend. [Blank Screen].


3. ASSY PDP MODULE P-Y-MAIN:  Can be located on the Left side of the panel, next to Main AMPS. [Blank Screen]


4. ASSY PDP MODULEP-LOGIC MAIN:  Can be located next below the SMPS power supply board. [Blank screen, Screen noise]


5. ASSY PDP MODULEP-Y-MAIN SCAN BUFFER:  Can be located at the extreme left, fitted vertically. [Row Bar screen is blank]


6. ASSY PDP MODULE P-ADDRESS E BUFFER: Can locate at the bottom left side. [Corresponding buffer Board block screen is blank]


7. ASSY PDP MODULE P-ADDRESS F BUFFER: Can locate at the bottom right. [Corresponding buffer board Block screen is blank]


8. ASSY PCB MISC-MAIN: Located just below the SMPS board. [No power,
   Abnormal screen for each input source, PIP screen trouble, Sound
   trouble]


9. ASSY BOARD P-FUNCTION: Located extreme left down side. [The side function key does not properly]


10. ASSY BOARD P-POWER&IR: Located at the bottom side [The remote
    control does not work properly, the LED does not work properly.


11. ASSY BOARD P-SIDE AV: Located rigth bottom side [The AV-2 and S-Video 2 do not work properly]

DRIVE BOARD TROUBLESHOOTING

• No voltage output => Operating voltage does not exists => PSU


• No Display => Operating Voltage exists, but no image on screen => Y-MAIN, X-MAIN, Logic Main, Cable.


• Abnormal Display => Abnormal image on screen, (Not open or short) => Y-MAIN, X-MAIN, Logic Main.


• Sustain Open => Some horizontal lines does not exist on screen => Scan buffer, FPC of X/Y


• Sustain short => Some horizontal lines appears to be linked on screen => Scan Buffer, FPC of X/Y


• Address Open => Some vertical lines does not exist on screen => Logic Main, Logic Buffer, TCP


• Address short => Some vertical lines appears to be linkde on screen => Logic Main, Logic Buffer, TCP

SERVICE MODE [WITH GENERAL REMOTE CONTROL]

TO ENTER SERVICE MODE:  POWER OFF=>MUTE=>1=>8=>2=>POWER ON

TO EXIT FROM SERVICE MODE: POWER OFF=>POWER ON

TO ENTER SERVICE MODE [WITH FACTORY REMOTE CONTROL]

POWER ON=> INFO=> FACTORY key

TO EXIT FROM SERVICE MODE

POWER OFF=>POWER ON

Press the factory key twice, with a keystroke interval of more than one second.[Pressing once enters Aging Mode].