Electronics Repair Questions? Ask an Electronics Technician
Make sure that the Tape Monitor 1 or 2 buttons are not depressed on the unit, also the same with any Mute functions. Check that the speaker selector switch is selected for the input you are plugged into. Also, you need an antenna to check for Audio using the FM, otherwise the signal will be muted.
If this answers your question, please click "Accept". Tips and Bonuses are welcome and appreciated!!