Samsung LE40N71B - No Video (Analog PC)

4 Troubleshooting
4-3
4-2-2 No Video (Analog PC)
Check a PC source and check
the connection of DSUB cable?
Input a analog PC signal and
connected cable(DPMS).
Yes
Does the signal appear at
#30, 22, 38(R, G, B) of
IC4001?
PC cable. Change a PC
cable. Change a main PCB ass'y.
Yes
Power Indicator is off.
Lamp on, no video.
No
No
1
Does the digital data appear
at the input of
LBE (RA4016~18)?
Check IC4001
Change a main PCB ass'y.
Yes
Yes
No
Yes
Check a LVDS cable?
Replace a lcd panel?
Please, Call to Samsung Co. LTD.
No
Does the digital data appear
at the output of IC4003
(RA4014,15_1CH,
R4132,33_1CH)?
Check IC4003
Change a main PCB ass'y.
No