Troubleshooting - Samsung PDP4298EDX/SMS Service Manual

6. Troubleshooting

6-1 Entirely no screen (Main Body)
Connect the set to a power source.
Power on.
Normal
Measure the SMPS
output voltage.
Normal
Check the Logic
outputs.
Normal
Check the X-board
outputs.
Normal
Check the Y-board
outputs.
Normal
Replace the Panel.
Samsung Electronics
Abnormal
Check SMPS CN801 and
Abnormal
Check the SMPS
AC inputs.(CN800S)
Replace the SMPS.
Abnormal
Replace the Logic board.
Abnormal
Replace the X-board.
Abnormal
Replace the Y-board.
Normal
802 outputs
Abnormal
Abnormal
Normal
Troubleshooting
Replace the video board.
Replace the SMPS fuse.
6-1