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4-19
4. Troubleshooting
4-1-7. No Video (Component)
Symptom
No video on component input.
-
Major
checkpoints
Check your source on the TV.
Check your source content.
Check all connections.
-
-
-
Diagnostics
40”
52”
No
Does the component data appear at
COMY, COMPB, COMPC
(Comp1 / Y, Pb, Pr)?
Power indicator LED is off.
Lamp(Backlight) on, no video
No
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
Check CN706
Change the Main PCB
40” : BN44-00264A
52” : BN44-00267A
Yes
Check IC201 (Saturn4)
Change the Main PCB
40” : BN44-00264A
52” : BN44-00267A
No
No
Does the digital data appear at
Pin #16,17,34,35 (LVDS Data clk)
of LVDS connector?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Input the component
source properly.
Yes
Yes
2
Check a set
in the ‘Stand-by mode’.
5
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LN40B550K1H
Страница 62: ...4 3 4 Troubleshooting L1 B13V B5V B12V B5V 1 9V B3 3V B9V ...
Страница 64: ...4 5 4 Troubleshooting Pin 16 17 Pin 34 35 TP67 TP69 TP71 TP72 TP70 ...
Страница 65: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
Страница 67: ...4 8 4 Troubleshooting Pin 16 17 Pin 34 35 Pin 12 Pin 7 ...
Страница 68: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
Страница 70: ...4 11 4 Troubleshooting Pin 16 Pin 17 Pin 2 Pin 4 Pin 8 ...
Страница 71: ...4 12 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 73: ...4 14 4 Troubleshooting Pin 16 17 Pin 34 35 Pin 2 Pin 4 ...
Страница 74: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 76: ...4 17 4 Troubleshooting Pin 16 17 Pin 34 35 V3CVBS COMY ...
Страница 77: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 79: ...4 20 4 Troubleshooting Pin 16 17 Pin 34 35 COMY COMPB COMPC ...
Страница 80: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 82: ...4 23 4 Troubleshooting R416 B12V COMSL COMSR V2SR V2SL TP_L L R R DSL DSR TP_915 TP_916 B3 3V ...
Страница 83: ...4 24 4 Troubleshooting WAVEFORMS 6 I2C Data 7 Speaker out ...
Страница 119: ...6 6 6 Wiring Diagram Memo ...