Troubleshooting; No Power - Samsung 203B - SyncMaster - 20" LCD Monitor Service Manual

4 Troubleshooting

4-1 No Power

There is no light in the power indicator.
Does proper DC 14 V
1
appear at Pin 5,6,7
of CN101?
Yes
Does proper DC 5V
2
appear at Output of
IC203?
Yes
Does proper DC 3.3V
3
appear at
Pin 4 of the IC403?
Yes
Does proper DC 2.5V
appear at
4
Pin 3 of the IC301?
Yes
Does proper DC 1.8V
5 appear at
Pin 2 of the IC304?
Yes
Check IC201 and IC302.
No
Check the IP Board.
No
Check the IC 203
No
Check the IC 403.
No
Check the IC 301.
No
Check the IC 304.
4 Troubleshooting
4-1