Checkpoints By Error Mode - Samsung PS43E450A1WXZG Service Manual

4. Troubleshooting

4.1.2. Checkpoints by Error Mode

■ No Power
Symptom
The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if
the cables are improperly connected or the Main Board or SMPS is not functioning. In this case,
check the following:
Major Checklist
Diagnostics
• The LEDs on the front panel do not work when connecting the power cord.
• The SMPS relay does not work when connecting the power cord.
The unit appears to be dead.
•
• Check the internal cable connection status inside the unit.
Check the fuses of each part.
•
Check the output voltages of the SMPS.
•
• Replace the Main Board.
Fuse
<Rear view of 43">
Fuse
<Rear view of 51">
CN801
CN201
CN801
CN201