Troubleshooting - Radio Shack 32-2055 User Manual

Troubleshooting

Problem
Why isn't my
amplifier powering
up, even though I
have tried turning
it on and off?
Why can't I hear
anything?
Why am I hearing
feedback?
Additional Information
Cause
The device may have
overheated.
The fuse might be blown.
The speakers might not be
connected properly.
The amplifier's LEFT and RIGHT
VOLUME, MIC1, MIC2, MIC3,
MIC4/PHONO, or CD/AUX
controls might be on their
minimum settings.
The speakers might not be
connected properly.
A microphone or cable might
be faulty.
The speakers might be the
wrong impedance for the PA.
The amplifier might have shut
down.
The FEEDBACK FILTER might
need to be adjusted.
Your microphones or speakers
could be too close together.
Solution
Turn your amplifier off. Wait until it
cools down and try again.
Check the amplifier's fuse and
replace it if necessary.
Check all connections.
Adjust the volume control to the
desired setting.
Check all connections.
Check all microphones and cables.
Make sure your speaker wires are
18-gauge [for wire length up to
7.6 m (25 ft)]. For best results, use
the shortest length of speaker wire
possible.
Turn the amplifier off and let it cool
down. Make sure the amplifier is
properly vented, then turn it back
on.
Turn the FEEDBACK FILTER
clockwise until you reduce or
eliminate feedback.
Reposition the microphones and
speakers.
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