Samsung UN40H5003AF - Page 28

No Video (HDMI 1, 2 - Digital Signal) 
Diagnostics
If the LED of POWER is off,
check Back Light is turn on
No
Check what is status ‘Stand-by’ or not
Yes
Check the SelfTest.
(Support Self Diagnosis Picture Test)
Remain other Problem
No
Check for connecting external device
Yes
choose the HDMI SOURCE
 Check the HDMI CONNECTOR
No
Input the HDMI signal
Yes
Check a below signal
CN401 CN404
(Pin#12,10 , #1#3, #4#6, #7#9 )(HDMI1)
(HDMI RX_Clk , RX_Data)
No
Check CN401,CN404
Check the HDMI cable
Change the Main Assy
Yes
Check a below signal
TP-EVEN_TXCLK+, EVEN_TXCLK-
TP-EVEN_TX*+, EVEN_TX*-
No
Check IC1001 (XL1)
Change the Main Assy.
Yes
Check the LVDS
/ Change the LCD panel
4-4
4. Troubleshooting