No Picture - Sony KLV-32R4 C Series Service Manual

2019/05/27 19:43:09 (GMT+09:00)
Troubleshooting

3-4. No Picture

3-4-1. General
No Picture
Check Input Source: Check Input Source:
-Tuner
- MHL/HDMI
-Video/Component
Replace Input
Source
Input
OK
Replace LVDS FFC
Harness
Input NG Picture OK
LVDS FFC
Harness
Problem Problem
Still No
Picture Picture
Replace B-Board
Picture OK
B-Board Issue
Check
Still No
PANEL_VCC_SW PANEL VCC SW
Picture Picture
+12V voltage at
C8601 (BA) /
CL6017 (BE) on
B-Board
+12V NG
Adaptor
or +12V DDCON
Problem
Change Change
Panel
Module* or
O-Cell*
Picture OK
Panel or O-Cell
Issue
BL_ON
+12V
CHECK BL_ON on CHECK BL ON on
OK
B-Board at CL9012.
HIGH (+3.3V): OK
LOW (0V): NG
BL_ON NG
Backlight or LED
Driver Problem
END
* O-Cell or Panel
Module replacement
depends on service
capabilities
OK
27
SYS SET