No Power - Samsung 932MW Service Manual

4. Troubleshooting

4-2. No Power

When turning on the Power button after connecting the power, the LED at the front of the
-
Symptom
monitor does not operate.
Check whether the Power Switch at the back of the monitor is turned on.
-
Check the IP board power fuse and the IP board output power.
-
Major
Check the connections for the IP board and the Main board inside the monitor.
-
checkpoints
Check the Main board power part and check also whether there is any abnormal output at other
-
output terminals.
Diagnostics
1
1
2
3
Caution Make sure to disconnect the power before working on the IP board.
4-2
IC110
IC109
Does proper 13V appear at pin No.
5,6,7 of CN600?
Yes
Dose proper 13V appear at C618?
Yes
Does proper 5V appear at pin No.1 of
IC110?
Yes
Does proper 1.8V appear at pin No. 1
of IC109?
Yes
Change main board for MICOM(IC300)
problem
CN600
C618 IC300
Main Board
No
No
No
No
Check IP Board
Check related circuit of
CN600
Check related circuit of IC110
Check related circuit of IC109