Troubleshooting - Samsung LN-4692D Service Manual

4 Troubleshooting

4-1 No Power
LAMP Off, power indicator LED
red color ?
Yes
Does proper Stand-By DC A6.2V
appear at C156 ?
Yes
Does proper Main DC
B12V,B5V,B12VS appear at
C106, C115, C119?
Yes
Does proper Inverter DC
24V appear at CNM802,
CNM803 in SMPS?
Yes
Does proper DC A5V,A3.3V
appear at C154, C151 ?
Yes
Does proper DC
B9V,B8V,VCC5P,B3.3V_1,B3.3V_2,
B5V_VCC appear at C108, C110,
C123, C128, C135, C133 ?
Yes
Does proper DC 1.8V appear at
C1103, C1154, C364, C1011 ?
Yes
Does proper DC 2.5V appear at
C1214, C1746 ?
Yes
A power is supplied to set ?
No
Check a connection power cable.
P/N: BN39-00691B
No
Change the Main Power Ass'y
26": BN96-03060A
32": BN96-03057A
40": BN44-00134A
No
No
Check IC106, IC107
No
Change the Main Ass'y
BN94-00850A
No
IC101, IC102, IC103, IC104, IC105
Change the Main Ass'y BN94-00850A
No
Check IC1101, IC1102, IC304, IC1001
Change the Main Ass'y BN94-00850A
No
Check IC1201, IC1702
Change the Main Ass'y BN94-00850A
Check a other function (No picture part)
Replace a LCD Panel
No
26": BN07-00254A
32": BN07-00253A
40": BN07-00264A
4 Troubleshooting
Check
4-1