Troubleshooting
6-2
Samsung Electronics
6-2 Checkpoints by Error Mode
6-2-1 No Power
Symptom
- 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 power of the unit seems to be out of order.
Major Checklist
The SMPS relay or the LEDs on the front panel do not work when connecting the power cord if the cables are improperly
connected or the Main Board or SMPS is out of order. In this case, check the following:
- Check the internal cable connection status inside the unit.
- Check the fuses of each part.
- Check the output voltage of SMPS.
- Replace the Main Board.
Troubleshooting
Procedures
Are the AC IN socket connector and
the Main SMPS CN800 connected?
The AC IN socket connector and
the Main SMPS CN800 connected
Is the Fuse (F101) of the Main SMPS
Power Input Part blown?
Replace Fuse (F101)
No
No
No
Yes
Yes
Yes
Main SMPS CN804-2
Pin 3: STB 5V
Pin 5 PS-ON: Check to see if it is 0V
Replace the Main SMPS
Replace the Main Board
Summary of Contents for PS42D51SX/XEC
Page 9: ...1 6 Samsung Electronics MEMO ...
Page 24: ...Alignment Adjustment Samsung Electronics 3 9 ...
Page 32: ...Samsung Electronics 5 2 MEMO ...
Page 40: ...6 8 Samsung Electronics MEMO ...
Page 41: ...Block Diagram Samsung Electronics 7 1 7 Block Diagram 7 1 Overall Block Diagram ...
Page 43: ...Block Diagram Samsung Electronics 7 3 7 2 3 Logic Board Block Diagram ...
Page 45: ...Wiring Diagram Samsung Electronics 8 1 8 Wiring Diagram 8 1 Overall Wiring ...
Page 68: ...Operation Instruction Installation Samsung Electronics 11 3 11 1 3 Remote Control ...
Page 69: ...Operation Instruction Installation 11 4 Samsung Electronics ...
Page 77: ...11 12 Samsung Electronics MEMO ...
Page 85: ...12 8 Samsung Electronics MEMO ...
Page 111: ...13 26 Samsung Electronics MEMO ...