ViewSonic VA2012w-2 Service Manual page 54

No Audio
ViewSonic Corporation
No Audio Output
OK
Check input signal
J1 OK?
OK
Check CN7 to
speaker OK?
OK
Check CN6 pin 1,2
12V correct?
OK
Check U6 pin 6
Volume and Q7
OK
Check U6
pin12(mute),p11(stby)
OK
Change M/B
NO
Check input source
or change J1
NO
Change speaker
Change power
NO
board module
NO
Change Q7
NO
Change U6
51
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VA2012w-2_VA2012wb-2