No Picture (Tuner_Cvbs) - Samsung LA26R71B Service Manual

4-2-4 No Picture (Tuner_CVBS)

Power Indicator is off.
Lamp on, no picure.
Yes
Dose the signal appear
4
at R110?
Yes
Does the signal appear at
4
#8 of IC500?
Yes
Does the digital data appear
3
at output of
R563_OP~R572_OP?
Yes
Check a LVDS cable?
Replacea lcd panel?
No
Connect the RF cable and
check RF signal.
No
Check a B+ voltage (#6 of Tuner) 5V,
change a main PCB ass'y
No
Change a main PCB ass'y.
No
Check a IC500.
Change a main PCB ass'y.
No
Please, Call to Samsung Co. LTD.
4 Troubleshooting
4-7