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Symptom
Will not turn on
No audio can be heard, audio
signal meter shows signal
No audio can be heard, audio
signal, meter DOES NOT show
signal
No microphone signal can be
heard
Unpleasant howling and
screeching heard from speakers
Remote Control not functioning
Possible Cause
AC power adapter cord is
incorrectly attached or not
plugged into outlet
Incorrect input source selected
MUSIC VOL control is down
Poor or incorrect output
connection to speakers or other
external units, or bad/defective
cables, wires or connectors
Poor or incorrect input
connection from audio source
unit, or bad/defective cables,
wires or connectors
Microphone controls are turned
down
Poor or incorrect input
connection from microphone,
or bad/defective cables, wires or
connectors
Microphone feedback
Batteries are dead, dying or
positioned incorrectly
Solution(s)
Check the AC adapter and the
AC outlet connections, as well as
the voltage selection switch
Check the fuse below the AC
adapter and see if it is broken
Check to make sure the correct
corresponding button is pressed
on the input selector in relation to
your audio source
Check to see if MUSIC VOL
control is all the way down; if so,
turn the knob slowly clockwise
Double check all output
connections to speakers or
other units.; try using another
set of cables/cords; make sure
to turn POWER OFF before
reconnecting cables
Double check all output
connections to speakers or
other units.; try using another
set of cables/cords; make sure
to turn POWER OFF before
reconnecting cables
Check MIC MASTER VOL and
all MIC VOL controls to see if
they are turned down; if so, turn
the knob slowly clockwise
Double check all microphone
connections; try using another
cable/cord; make sure to turn
MIC MASTER VOL down
before reconnecting cables
Place microphones farther away
from speakers; face microphones
away from speakers
Replace with fresh batteries or
double check battery positioning
Troubleshooting