Samsung LE40R81BX - Page 92

4 Troubleshooting
4-7
4-2-4 No Picture (Tuner_CVBS)
Dose the signal appear
at R2207?
Check a B+ voltage (#3 of Tuner) 5V,
change a main PCB ass'y
Yes
Does the signal appear at
C2085 of IC2001?
Change a main PCB ass'y.
Yes
Does the digital data appear at
output of RA2008~2013?
Check a IC4001.
Change a main PCB ass'y.
Yes
Power Indicator is off.
Lamp on, no picure.
No
Connect the RF cable and
check RF signal.
No
No
No
Yes
Check a LVDS cable?
Replacea lcd panel?
Please, Call to Samsung Co. LTD.
No
4
4
3