Samsung PS42B451B2WXXU Service Manual page 49

4-1-4 Troubleshooting Procedures by assembly
No Assembly
1 SMPS-PDP TV
2 ASSY PDP MODULE P-X-MAIN
3 ASSY PDP MODULE P-Y-MAIN
4 ASSY PDP MODULE P-LOGIC MAIN
5 ASSY PDP MODULE P-Y-MAIN SCAN BUFFER
6 ASSY PDP MODULE P-ADDRESS E BUFFER
7 ASSY PDP MODULE P-ADDRESS F BUFFER
8 ASSY PCB MISC-MAIN
9 ASSY BOARD P-FUNCTION
Samsung Electronics
No power, Blank screen, the Relay repeats On and Off.
Blank screen
Blank screen
Blank screen, Screen noise
Row Bar screen is blank (42" Only)
Corresponding Buffer Board block screen is blank.
Corresponding Buffer Board block screen is blank.
No Power, Abnormal screen for each input source, PIP screen trouble, Sound trouble
The side function key does not work properly
Major Symptoms
Troubleshooting
4-17