Samsung HT-C5200/EDC - Troubleshooting; Checkpoints by Error Mode

Samsung Electronics 4-1
Troubleshooting
4. Troubleshooting
4-1 Checkpoints by Error Mode
Oscilloscope Setting Values
Voltage/DIV 1V/div
TIME/DIV 500ms/div
4-1-1 No Power
No Power Detected
(Stand by LED OFF)
Yes
Yes
No
No
Check MAIN PCB.
No
Change Fuse.
Change SMPS.
Yes
Check MAIN PCB.
F1R and CON1
are shorted?(SMPS)
Is there 5.4V in CON3
pin 12, 13, and 14?
Is there 2.5V in
ICFB5401 pin 1?