Hi all .
Volume keeps being pulled to zero .
Removed toggle control & audio chip ( AD82587D ) , which is IC2 BUS controlled , but no change .
Also disconnected I/R Receiver .
Measured DC voltage on all pads where the audio chip lives ( see picture )
Only ones that differ from measurements on a working board , are pins 15 ( RA ) , 17 ( RB ) , 20 ( LB ) & 22 ( LA )
All at zero volts on faulty board , but that may be due to chip removed .
On fully working board , above pins all at 12 volts .
Headphone port also seems good .
Volume keeps being pulled to zero .
Removed toggle control & audio chip ( AD82587D ) , which is IC2 BUS controlled , but no change .
Also disconnected I/R Receiver .
Measured DC voltage on all pads where the audio chip lives ( see picture )
Only ones that differ from measurements on a working board , are pins 15 ( RA ) , 17 ( RB ) , 20 ( LB ) & 22 ( LA )
All at zero volts on faulty board , but that may be due to chip removed .
On fully working board , above pins all at 12 volts .
Headphone port also seems good .
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