Samsung LN40R71BAX - No Picture (Tuner DTV TS) Troubleshooting

4 Troubleshooting
4-9
4-2-5 No Picture (Tuner DTV TS)
Does the digital data appear
at R123,R124,R125
(SIF,AFT,CVBS)?
Check TU101.
Change the main PCB
Ass'y or Tuner.
Yes
Does the digital data appear
at output of R916_FBE ~
R921FBE?
Check IC601.
Change the main PCB Ass'y.
Yes
Check the RF source and check
the connection of RF cable?
No
Input a RF signal.
check the connected cable.
No
No
Yes
Does the digital data appear
at output of R1001_FBE ~
R1017_FBE?
Check IC 901_FBE
Change the main PCB Ass'y.
No
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, call to Samsung Co. LTD
No
7
2
3