Panasonic TH-42PX20U Service Update Information page 51

Symptom: Vertical Black Bar
Suggestion: Since the C2 board contains
the serial to parallel converters for the
picture data that drive this portion of the
screen; the most likely cause for this defect
can be localized to the C2-Board or the D-
Board.
Symptom:
Suggestion: Since the C1 board contains
the serial to parallel converters for the
picture data that drive this portion of the
screen; the most likely cause for this
defect can be localized to the C1-Board
or the D-Board.
Symptom: No OSD but it has video.
Suggestion: Check signal on the DG board.
Symptom: Burned image
(pattern) is visible.
Suggestion: Access the CAT
mode and activate the scroll
bar or run the set with a white
raster for at least fifteen
minutes.
Vertical Black Bar
51
Figure 32
Figure 33
Panasonic
Figure 34