4-1-4. No video (HDMI1, 2, 3, 4 - Digital signal)
Symptom Audio is normal but no picture is displayed on the screen. -
Major
checkpoints
Check the HDMI source. -
Check the HDMI switch, Check the Chelsea. -
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. -
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the HDMI source and
check the connection of HDMI cable?
Check the LVDS cable?
Check the T-Con B'd?
Replace the LCD panel?
Does the digital data appear at
TP-E_TXCLK+, E_TXCLK- ,
O_TXCLK+, O_TXCLK-?
Does the signal appear at
CN1002 (Pin#12 , #7 )(HDMI1)
CN1006 (Pin#12 , #7 )(HDMI2)
CN1001_550 (Pin#12 , #7 )(HDMI3)
CN1004 (Pin#12 , #7 )(HDMI4)
(HDMI RX_Clk , RX_Data) ?
Check a set in the 'Stand-by mode'.
Input the HDMI signal properly.
Please, Contact Tech support.
Check IC1102 (SX1).
Change the Main Assy.
Check CN1002, CN1006
CN1001_550, CN1004.
Check HDMI cable.
Change the Main Assy.
Yes
Yes
Yes
Yes
No
No
No
No
No
2
3
Caution Make sure to disconnect the power before working on the IP board.
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