Solved! My amplifier not outgoing sound,what is the solutin

Solution
The source isn't working. Does it not make sound on more than one source?
Check that the tape monitor switch is not on. Is the speaker selector set correctly.
Are the speakers connected and not blown?
If there are fuses on the back of this mystery amp they may be blown.
The amp may be blown.
The source isn't working. Does it not make sound on more than one source?
Check that the tape monitor switch is not on. Is the speaker selector set correctly.
Are the speakers connected and not blown?
If there are fuses on the back of this mystery amp they may be blown.
The amp may be blown.
 
Solution