No Video - Samsung GH17LS Service Manual

5-2 No Video

Check signal cable connection and power.
Does the X101 and X201 oscillate properly?
1
Yes
There R, G, B input are at R103, R107 and R108?
Yes
There sync. and data output are
R260, R261, R211, R213, and RA201 ~ RA212?
3 4
Yes
There proper signal input are
Pin 66, 65, 64, and 11 of IC102?
5
Yes
Does the output signal appear at
R121 ~ R130 R132, R135, R136, and R138 ~ R144?
7
Yes
There are DC 5V at Pin 1, 2 and 3 of CN102?
Yes
There are DC 12V, DC5V and DC 3.3V at
Pin 10, 11, 12 ; Pin 7 and Pin 4 of CN104?
GH17LS/GH17ES
2
5 6
3 4 6
No
Replace that or
check related circuit.
No
Check input part.
No
Please check the power related
IC202 and output part.
No
Check IC102 and related circuit.
Check the LVDS_EN at
No
R118 is high or not.
Normal state is high.
No
Check the Power
and related circuit.
No
Please check the Inverter
and related circuit.
5 Troubleshooting
5-3