When The Power Does Not Turn On - Samsung S19A100N Service Manual

4. Troubleshooting

4-2. When the Power Does Not Turn On

When turning on the Power button after connecting the power cable, the LED at the front of the
-
Symptom
monitor does not operate.
Check the IC601 power fuse and the adapter.
-
Major
Check the connections for the CN600 and the Main board inside the monitor.
-
checkpoints
Check the Main board power part and also check whether there is any abnormal output at any
-
of the other output terminals.
Diagnostics
Caution
Make sure to disconnect the power before working on the Main board.
4-2
CN600
Is DC 5V measured at pins 4, 5 of
the CN600 connector when pins 1, 2, 3
are 0V?
Yes
Is DC 3.3V measured at pin 5 of
IC601 when pin 4 is DC 5V?
Yes
Check and replace the Main board.
Yes
Check the connection status for
No
Replace the Adapter.
No Check the circuits related to
IC601
the function assy.
IC601.