Samsung BX2250 - When the Power Does Not Turn On

4-2
4. Troubleshooting
4-2. When the Power Does Not Turn On
Symptom
- When turning on the Power button after connecting the power cable, the LED at the front of the
monitor does not operate.
Major checkpoints
- When turning on the Power button after connecting the power cable, the LED at the front of the
monitor does not operate.
- Check the IC604 power fuse and the IC604 output power.
- Check the connections for the CN601 and the Main board inside the monitor.
- Check the Main board power part and also check whether there is any abnormal output at any of
the other output terminals.
Diagnostics
Yes
Check the connection status for
the function assy.
Yes
No
Is DC 5V measured at pins 3, 5 of the
IC604
IIs DC 3.3V measured at pin 5 of IC601
when pin 4 is DC 5V?
Check the circuits related to
IC601.
No
Yes
Check the circuits related to
IC602.
No
Is DC 1.8V measured at pin 5 of IC602
when pin 4 is DC 5V?
Yes
Check and replace the Mainboard.
Caution Make sure to disconnect the power before working on the Main board.
and the IC601
Check CN601