4 Troubleshooting
4-1
4 Troubleshooting
4-1 No Power
Does proper Stand-By DC
A5V appear at C1875 ?
Change the Main Power assembly
40" : BN44-00140A
46" : BN44-00141A
Yes
Yes
Yes
No
Check power cable.
P/N: BN39-00639A
No
Does proper Main DC
B12V,B5V,B12VS appear at
C181, C186, C167?
Yes
No
No
Does proper Inverter DC
120V appear at CN102 in
SMPS?
Check IC151
Change the Main assembly
40 " : BN94-01008E
46" : BN94-01008D
Yes
Does proper DC A3.3V appear
at C159 ?
Check
IC183, IC185, IC102, IC103, IC104, IC105
Change the Main assembly
40 " : BN94-01008E
46" : BN94-01008D
Yes
Yes
Yes
Does proper DC S3.3V_D,
B3.3V, +12V,B5V appear at
C1847,C1858, C181,C1834?
Does proper MEM_S2.5V
ALBA_S1.2V appear at
C0148,C0425?
A power is supplied to set ?
Check a other function (No picture part)
Replace a LCD Panel
40" : BN07-00288A
46" : BN07-00291A
No
No
Check IC015, IC041
Change the Main assembly
40 " : BN94-01008E
46" : BN94-01008D
No
No
LAMP Off, power indicator LED
on?
Summary of Contents for LN-T4065F
Page 17: ...7 Block Diagrams 7 2 7 2 Audio Block Diagram ...
Page 18: ...13 Circuit Descriptions 13 1 13 Circuit Descriptions 13 1 Main Board Block Description ...
Page 19: ...13 Circuit Descriptions 13 2 13 2 Video Signal Path ...
Page 20: ...13 Circuit Descriptions 13 3 13 3 Audio Signal Path 13 3 Side AV Signal Path ...
Page 21: ...13 Circuit Descriptions 13 4 Menu ...
Page 112: ...5 Exploded View Parts List 5 3 M0014 M0013 M0013 T0003 M0215 T0175 5 3 LNT4665F Exploded View ...
Page 118: ...10 Operating Instructions and Installation 10 3 10 3 Remote Control ...
Page 121: ...12 PCB Diagram 12 2 12 2 IP BOARD Diagram 46 ...
Page 125: ...1 Precautions 1 4 Memo ...
Page 131: ...2 Product Specifications 2 6 Memo ...
Page 133: ...14 Reference Infomation 14 2 14 1 2 Supported Mode 1 ...
Page 158: ...4 Troubleshooting 4 3 WAVEFORMS 1 2 PC Input V Sync H Sync 3 LVDS Out CLK ...
Page 166: ...4 Troubleshooting 4 11 WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar 7 TS DATA Out Clk Data 0 ...
Page 173: ...4 Troubleshooting 4 18 Memo ...
Page 174: ...8 Wiring Diagrams 8 1 8 Wiring Diagram ...
Page 175: ...8 Wiring Diagrams 8 2 Memo ...