PDP 2007 Models:
TH-65/58/50PZ750U, TH-58/50/42PZ700U, TH-50/42PZ77U, TH-50/42PX77U, TH-50/42PX75U
Diagnosis by Test Pattern
In case of PDP, the picture problem at all over the screen
(Picture Noise, Full Vertical Line) is mainly caused by D or DG (A) board
defective. This Test Pattern is able to diagnose D or DG (A) board. Because, D
board had Test Pattern. So, we can judge by using Test Pattern which is
defective. Regarding diagnosis for these board, confirm as follows.
All Models Picture
Noise, Full Vertical Line
Enter the Test Pattern
1. While pressing "VOLUME-" button of the TV set, press
"RECALL" button of the remote control three times within 2 seconds.
2. Push button "1" of Remote Controller several
times, and select "OPTION" setting.
3. Press "OK" button of Remote controller for
three seconds or more to place the unit in the test pattern.
In case of No picture problem (Sound OK), the defective
board is mainly DG (A) or D board. But in this case, Test Pattern isn’t useful
for diagnosis. Because, this symptom can not display OSD and not enter to the Service
Mode. This method is possible to judge the defective board in this symptom.
All Models No picture (Sound OK)
Diagnosis for Vertical Line
Abnormal Picture All over the
screen
Possibility DG, D Board
1. Disconnect D5 connector
2. Enter to the Test pattern
How to enter the Test Pattern
1. While pressing "VOLUME-" button of the TV set, press
"RECALL" button of the remote control three times within 2 seconds.
2. Push button "1" of Remote Controller several
times, and select "OPTION" setting.
3.
Press "OK" button of Remote controller for
three seconds or more to place the unit in the test pattern. If you can
measure the waveforms by oscilloscope, you can identify
which DG board is good or not.
Electronic Abnormal Discharge Picture All over the screen
SC, SU, SD Board
Disconnect SU or SD Board
Abnormal Picture, Vertical Line
(Corner Area, Some part of the screen)
D, C Board, Plasma Panel
