4-1-4. No video (HDMI1, 2 - 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
Does the signal appear at CN1201
(Pin#12, #7)(HDMI1)
(HDMI RX_CLK, RX_Data)?
Does the digital data appear at
TP-260_TXCLK+, 260_TXCLK- ?
Yes
Yes
Yes
Yes
Check a set in the 'Stand-by mode'
Input the HDMI signal properly.
Please, Contact Tech support.
Check CN1201, CN1202_26,
CN1203_26.
Check HDMI cable.
Change the Main Assy.
Check IC1102(SX1)
Change the Main Assy.
No
No
No
No
No
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?
3
2
Caution Make sure to disconnect the power before working on the IP board.
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