No Sound Condition - Philips 32PFL3738/V7 Service Manual

D.) No Sound Condition
First check the audio source
Input is proper. Also check all
audio inputs given to TV are OK.
Check Speaker conn. is
connected properly to TV or not
damaged
Check the power supply 12V is
coming at C809/C817 i.e. VCC
pin of audio IC.
Check if O/P coils of Audio IC
L805/806/807/808 are OK or not.
If all the conditions are normal, but
still problem is present, then try to
replace the Audio IC TPA3110LD2
or replace the main chassis.
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
No Effect
Re-connect the input cables to
TV and source properly.
1. Re-connect the speaker
conn. in header XS901.
2. If damaged change the SPK.
Conn., SPK. Box assy.
If 12V not coming then check if
12V is coming at N500 pin
no.7. Also check if Mute Pin no.
1/2 of IC N800.
Normal
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