Pioneer vsx 521 k has test sound but no sound otherwise

Did you attach an antenna and try the FM or AM radio? That is the only input that will by default work.
Did you set up the receiver input menu? That is where you assign a connection (say optical 1) to an input (say video 1).
The owners manual will give you all the details.
 
Did you attach an antenna and try the FM or AM radio? That is the only input that will by default work.
Did you set up the receiver input menu? That is where you assign a connection (say optical 1) to an input (say video 1).
The owners manual will give you all the details.
 
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F Audio 1
B Audio 1
K Audio 1
P Audio 2
A Audio 4
V Audio 1
M Audio 1
C Audio 3
O Audio 1
D Audio 1
C Audio 1
M Audio 3
L Audio 1
C Audio 3
T Audio 2
R Audio 2
C Audio 6
J Audio 1
J Audio 7
J Audio 1

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