4-13
4. Troubleshooting
4-1-6. No Video (Tuner DTV)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the DTV source.
-
Check the Tuner, Check the Chelsea.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Check the connection of RF cable?
Check the LVDS cable?
Check the T-Con B'd?
Does the digital data appear at
TP-, E_TXCLK- ,
, O_TXCLK-?
Check the 'signal strength' in Self Diagnosis
menu Strength is enough?
Does the DC B5V_TU_PW, TU33V_PW
appear at #3, #5 Pin of Tuner
Check a set in the 'Stand-by mode'.
Input the RF source properly.
Please, Contact Tech support.
Check IC1102 (SX1).
Change the Main Assy.
Input the RF cable properly.
Check the D-TV source.
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
2
Caution
Make sure to disconnect the power before working on the IP board.
Содержание LE26C45 Series
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Страница 31: ...4 6 4 Troubleshooting WAVEFORMS 1 PC input V sink H sink R G B 2 LVDS output ...
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Страница 34: ...4 9 4 Troubleshooting WAVEFORMS 3 HDMI input RX_Data RX_Clk 2 LVDS output ...
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Страница 37: ...4 12 4 Troubleshooting WAVEFORMS 2 LVDS output ...
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Страница 40: ...4 15 4 Troubleshooting WAVEFORMS 2 LVDS output ...
Страница 42: ...4 17 4 Troubleshooting ...
Страница 43: ...4 18 4 Troubleshooting WAVEFORMS 4 CVBS OUT Grey Bar 2 LVDS output ...
Страница 45: ...4 20 4 Troubleshooting ...
Страница 46: ...4 21 4 Troubleshooting WAVEFORMS 5 Compnent_Y Gray scale Pb Pr Color bar 2 LVDS output ...
Страница 48: ...4 23 4 Troubleshooting ...
Страница 49: ...4 24 4 Troubleshooting WAVEFORMS 6 Speaker out ...
Страница 66: ...4 41 4 Troubleshooting 4 9 3 Main Inner 2 4 9 4 Main Inner 3 ...
Страница 67: ...4 42 4 Troubleshooting 4 9 5 Main Bottom ...
Страница 68: ...4 43 4 Troubleshooting 4 9 6 Power_32 SMPS LC5XX 4 9 7 Power_37 SMPS LC5XX ...
Страница 69: ...4 44 4 Troubleshooting 4 9 8 Power_40 SMPS LC5XX 4 9 9 Power_46 SMPS LC5XX ...
Страница 70: ...4 45 4 Troubleshooting 4 9 10 Power_26 SMPS LC45X 4 9 11 Power_32 SMPS LC45X ...