Samsung HT-C550 - 4 Troubleshooting

Samsung Electronics 4-1
Troubleshooting
4. Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 Main Power
No power detected
(Stand by LED off)
Change SMPS.
Check Main PCB
No
Change fuse
No
Check Main PCB
Yes
FR1 is OK?
ICFB5401 Pin 1 is 2.5V
CON3 Pin 12, 13, 14 is 5.4V?
No