Samsung GY17HS Series Service Manual page 17

Tft-lcd monitor
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5 Troubleshooting
5-2 No Video
Check signal cable connection and power.
1 2
Do X301 oscillate properly?
Is there R, G, B input at R427, R428 and R429?
Does sync appear at Pin 8 and 10 of IC201?
Is there sync and data output
R302, R303, R305, R304 and RA301 ~ RA312?
3
4
5
Does the output signal appear at
Pin 8~13, 15, 16, 18~23, 25~30 of CN402?
There are DC 5V at Pin 1, 2 and 3 of CN402?
Replace LCD panel.
5-3 No Touch Screen (GY17HS*)
There are DC 5V at Pin 2 of CN201?
Replace Touch Screen Ass'y board.
5-2
All manuals and user guides at all-guides.com
Yes
Yes
Yes
6
Yes
Yes
Yes
Yes
No
Replace or
check related circuit.
No
Check input part.
No
Check IC303 and related circuit.
No
Check the power related to
IC303 and output part.
Check the LVDS_EN at
No
R301 is high or not.
Normal state is high.
No
Check the IC101
and related circuit.
No
Replace I/P board or
check related circuit.
GY17HS*/GY17HSS*/GY17HSG*

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