Samsung G5K32ASA Service Manual page 54

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4. Troubleshooting
4-1-3. No Video (HDMI 1, 2, 3, 4 - Digital Signal)
Symptom
Major
checkpoints
Diagnostics
Caution
4-8
Audio is normal but no picture is displayed on the screen.
-
Check the HDMI source.
-
Check the HDMI switch, Check the SEMS03.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Power Indicator is off.
Lamp(Backlight) Off, no video?
Yes
Check the HDMI source and check
the connection of HDMI cable?
Yes
Does the signal appear at
R9030 (Pin#10 , #6 )(HDMI1)
R9018 (Pin#10 , #6 )(HDMI2)
3
R6105 (Pin#10 , #6 )(HDMI3)
R6014 (Pin#10 , #6 )(HDMI4)
(HDMI RX_Clk , RX_Data)?
Yes
Does the digital data appear at
3
R6021, R6025
(D2 RX_Clk, D2 RX_Data)?
Yes
Does the digital data appear at
TP8007(FBE_HSYNC_IN)
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'.
No
Input the HDMI signal properly
Check JA3001~4
No
Check HDMI cable
Change the Main Assy
BN94-02709A
Check IC9001 (HDMI switch)
No
Change the Main Assy
BN94-02709A
Check IC8003 (FBE)
No
Change the Main Assy
BN94-02709A
No
Please, Contact Tech support
11/8/15