Samsung PS43F4100ARLXL Service Manual page 22

4. Troubleshooting
■ No Sound
•
Symptom
•
•
Major Checklist
•
•
Diagnostics
CAUTION
Make sure to disconnect the power before working on the IP board.
4-6
Video is normal but there is no sound.
When the speaker connectors are disconnected or damaged.
When the sound processing part of the Main Board is not functioning.
Speaker defect.
SMPS not supplying voltage to the main board.
Speaker
Is the ca ble conne ction be twe e n
Main boa rd a nd the s pe a ke r
prope rly conne cte d?
Ye s
Is th e output volta ge of S MP S norma l?
(CN801 P IN 7 : 15V)
Ye s
(1)
Is the s pe a ke r output te rmina l of
the Ma in boa rd norma l?
Ye s
Re place the S pe a ke r.
Speaker Cable
Conne ct the ca ble prope rly or
No
re place the ca ble, if ne ce s s a ry.
No
Re place the S MP S .
No
Re place the Main boa rd.
So und Output Sh a pe
(1)
Copyright© 1995-2013 SAMSUNG. All rights reserved.
CN4007