Samsung 920NW Service Manual - Page 23
White Screen, Check VLCD Is - reset
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UPC - 729507800905
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4 Troubleshooting 4-6 White Screen White Screen LVDS Cable Yes Reinsert No Workmanship Change LVDS Yes Cable LVDS Cable NG No Check VLCD Is 5V? No Check Panel Enable Of U103 (pin75) is High? Yes No Check R134, R176, Q102, Q105 Check LVDS Yes Signals No Check the HW No Reset Of U103 pin19 Yes Check the pins Of U103 Panel Fail Check C149 R157 END 4-6
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4 Troubleshooting
4-6
4-6
White Screen
White Screen
LVDS Cable
Reinsert
Workmanship
Yes
Change LVDS
Cable
LVDS Cable NG
Panel Fail
Check C149 R157
END
Yes
Yes
Yes
No
No
No
No
Check VLCD Is
5V?
Check LVDS
Signals
No
Yes
Check Panel
Enable Of U103
(pin75) is High?
Check the HW
Reset Of U103
pin19
No
Check R134, R176,
Q102, Q105
Check the pins Of
U103