No Sound - Samsung 2333HD Service Manual

4. Troubleshooting

4-7. No Sound

Symptom The LED power turns on but the screen is blank when the DVI cable is connected.
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Even though the LED power turns on, the screen is blank when connecting the DVI cable.
-
Check the DVI cable connections.
Major -
checkpoints
Check whether the LVDS cable is connected correctly to the panel.
-
Check whether the lamp connector of the panel is connected correctly to the IP board.
-
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
4-16
Picture is display, no sound.
Yes
⑥ Does the signal appear at Pin
#P5,P6,R3,R4,Y3,Y4,R5,R6 of
IC4010?
Yes
Check the 3.3V of #1 IC9002.
Yes
⑦ check output signal of
#22,23,28,29,42,43,48,49 of IC9002
Yes
Replace the speaker ass'y?
IC4010
IC9003
IC9002
Main Board Front
No
No
No
No
Connect a sound cable.
control a volume.
Check a Sound signal connection.
check IC9003.
Change a main PBA.
check IC9002.