Samsung G5K32ASA Service Manual page 52

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4. Troubleshooting
4-1-2. No Video (Analog PC signal)
Symptom
Major
checkpoints
Diagnostics
Caution
4-6
Audio is normal but no picture is displayed on the screen.
-
Check the PC source
-
Check the SEMS03.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Power indicator LED is off.
Lamp(Backlight) on, no video?
Yes
Check the PC source and
check the connection of D-SUB?
Yes
Does the signal appear at
R6037, R6034, R6035, R6032, R6023
1
(R, G, B, H, V) of IC6003?
Yes
Does the digital data appear at
R8051 (HSYNC_OUT)
2
Pin #19,20,34,35 (LVDS Data clk)
of LVDS connector?
Yes
Check the LVDS cable?
Replace the LCD panel?
Make sure to disconnect the power before working on the IP board.
Published in Heiloo, Holland.
No Check a set in the
'Stand-by mode' or 'DPMS mode'.
Input the analog
No
PC signal properly.
Check JA4005_PC, PC cable.
No
Change the Main Assy
BN94-02709A
No
Check IC8003. Change the Main Assy
BN94-02709A
No
Please, Contact Tech support.
11/8/15