Samsung LN23R71BAX Service Manual page 32

4-2-4 No Picture (Tuner_CVBS)
Check the RF source and check
the connection of RF cable?
Yes
Does the signal appear at
6
C611?
Yes
Does the digital data appear
2
at output of R916_FBE ~
R921FBE?
Yes
Does the digital data appearat
3
output of R1001_FBE ~
R1017_FBE?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
Input a RF signal.
check the connected cable.
No
Check a B+ voltage (#6 of Tuner) 5V,
change a 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
4-7