KD-55X9000A (serv.man2) - Sony TV Service Manual (repair manual). Page 119

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No Sound 
Change the Speaker 
Harness 
Speaker Harness 
Replace 
the B* Board 
Speaker 
NG 
NG 
Check the  
“Speakers setting” 
Change to  
“TV Speaker” 
“Audio System” 
“TV Speakers” 
Symptom  
improvement 
Symptom  
improvement 
B* Board 
3-3. NO SOUND 
KD-55/65 X9000A, X9004A(PA) 
119 
TROUBLE SHOOTING 
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