No Video_Hdmi1, 2 - Digital Signal - Samsung T19C301 Series Service Manual

4. Troubleshooting 4. Troubleshooting

4-2-2. No video_HDMI1, 2 - Digital signal

Symptom Audio is normal but no picture is displayed on the screen.
• Check the HDMI source.
Major
• Check the HDMI switch, Check the Chelsea.
checkpoints
• This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the HDMI source and check the
Diagnostics
1
(Pin#12 , #7 )(HDMI2) (HDMI RX_Clk ,
2
Caution Make sure to disconnect the power before working on the Main board.
4-4 4-4
Power indicator LED is off.
Lamp(Backlight) on, no video.
Yes
Check the Self Diagnosis (Support →
Self Diagnosis- → Picture Test).
Dose the promblem still exist self
diagnosis?
Yes
connection of HDMI cable.
Yes
Does the signal appear at CN501_H1
(Pin#12 , #7 )(HDMI1), CN502_H2
RX_Data).
Yes
Does the digital data appear at TP-E_
TXCLK+, E_TXCLK- , O_TXCLK+,
O_TXCLK-.
Yes
Check the LVDS cable?
Check the T-Con Board?
Replace the LCD panel?
Yes
Please, Contact tech support.
Check a set in the 'Stand-by mode'
No
Check external devices and
No
connections.
No Input the HDMI signal properly.
Check CN501_H1,CN502_H2.
No Check HDMI cable.
Change the Main Assy.
Check IC901 (NT13).
No
Change the Main Assy