No Video (3-Hdmi_Digital Signal) - Samsung UN FH6200F Series Service Manual

4-2-2. No Video (3-HDMI_Digital Signal)

Symptom Audio is normal but no picture is displayed on the screen.
• Check the HDMI source.
Major • Check the HDMI switch.
checkpoints
• This may happen when the LVDS cable connecting the Main Board and the Panel is
disconnected.
Check the signal at Input of Main Board ?
1
Diagnostics
2
2
Caution Make sure to disconnect the power before working on the IP board.
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the HDMI source and check the
connection of HDMI cable ?
Yes
HDMI1 Clk : Pin #31,#32 of IC601
DATA : Pin #33~#38 of IC601
HDMI2 Clk : Pin #21,#22 of IC601
DATA : Pin #23~#28 of IC601
HDMI3 Clk : Pin #11,#12 of IC601
DATA : Pin #13~#18 of IC601
HDMI4 Clk : Pin #2,#3 of IC601
DATA : Pin #4~#9 of IC601
Yes
Check the signal at Output of 'HDMI
switch IC' ?
HDMI RX_Clk : Pin#116~117 of IC601
RX_Data : Pin#110~115 of IC601
Yes
Check the LVDS signal at output of Main
Board ?
TX2_CLK : LV_TX2_DN/DP
TX4_CLK : LV_TX4_DN/DP
Yes
Check the LVDS cable?
Replace the T-CON, LCD panel?
No Check a set in the 'Stand-by mode'.
No Input the HDMI signal properly.
Check CN601~4.
No Check HDMI cable.
Change the Main Ass'y.
Check IC601(HDMI switch).
No
Change the Main Ass'y.
Check IC1001(X10+).
No
Change the Main Ass'y.
No Please, Contact Tech support.
4. Troubleshooting
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