Troubleshooting; No Power (Led Off) - Samsung DSR9500 VIA CI Service Manual

4. Troubleshooting

NO POWER (LED OFF)

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