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NO POWER (LED OFF)
Power switch and
power plug pin is
connected?
SMPS OK?
: BD70 ~ BD75
Check T1001
Connect switch and power Pug pin.
Yes
Yes
No
No
Check SMPS.
Front PCB ass'y is OK?
Yes
No
Check Front PCB ass'y.
U101 (12, 13) signal?
: 27MHz CLK
No
Check X100.
Yes
U101 (1, 2, 5, 7) signal?
: 27MHz CLK
No
Check U101.
Yes
108MHz CLK is oceared
at R2005, R2006.
Check U100
Yes
Yes
No
Check U112.
Samsung Electronics 4-1
4. Troubleshooting