Samsung LN23R71BAX Service Manual page 30

4-2-3 No Video (HDMI - Digital Signal)
Power Indicator is off.
Lamp on, no video.
Yes
Check the HDMI source and
check the connection of
HDMI cable?
Yes
Does the signal appear at
4
R461,R464,R457,R458,R454,
R456,R467-R474?
Yes
Does the digital data appear
5
at output of R738 ~ R745?
Yes
Does the digital data appear
at output of R916_FBE ~
2
R921FBE?
Yes
Does the digital data appearat
output of R1001_FBE ~
3
R1017_FBE?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
Input a HDMI signal.
check the connected cable.
Check JA801, JA802,
No
HDMI cable.
Change the HDMI cable.
Change the main PCB Ass'y
No
Check IC405
Change the main PCB Ass'y.
No
Check IC601.
Change the main PCB Ass'y.
No
Check IC 901_FBE
Change the main PCB Ass'y.
No
Please, call to Samsung Co. LTD
4 Troubleshooting
4-5