No Power - Samsung 2333HD Service Manual

4. Troubleshooting

4-2. No Power

Symptom Though the power swtich on, the LED power off and the screen is blank.
-
Check Power cable.
-
Check whether the Lamp connector is connected correctly to the IP.
-
Major
checkpoints
Check whether the power cable is connected correctly to the MAIN.
-
Check whether the Function cable is connected correctly to the MAIN.
-
Diagnostics LAMP off, power indicator
Does proper DC14.5V appear
Does proper DC3.3V, 1.2v appear
A power is supplied to set?
Caution Make sure to disconnect the power before working on the IP board.
4-2
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C1070
BD1014
IC1004
IC1010
C1105
Main Board Front
LED red color?
Yes
Does proper 5V appear
at BD1021.
Yes
at C1070?
Yes
at BD1014, C1105?
Yes
Check a connection a
No
power cable.
No
Change a Assy PCB Power.
No
Change a Assy PCB Power.
Check IC1004, IC1010.
No
Change a main PBA.
Check a other function.(No picture
No
part) Replace a lcd panel.