7.1 Troubleshooting
Problem
Probable Cause
Solution
No Audio
Low or no remote turn-on voltage.
Check remote connections at the amplifier
and source unit.
Blown amplifier fuse.
Replace with a new fast-blow fuse of the
same rating.
Power wires not connected.
Check battery and ground wiring at the
amplifier and check the battery connections.
Speaker leads shorted.
Check speaker continuity to ground. It
should not show a common ground.
Speakers not connected or are blown.
Check speaker connections at the amplifier.
Measure speaker coil impedance.
Audio cycles on and off
Thermal protection circuits are
shutting the amplifier off.
Check the installation for adequate
ventilation.
Consult an authorized Aquatic AV dealer.
Distorted audio
Gain is not properly set or the
speaker cones are damaged.
Review instructions for setting gain. Inspect
each speaker cone for signs of damage,
such as frozen cone or burning smell.
Amplifier fuse keeps blowing
Wiring is connected incorrectly or
there is a short circuit.
Review the installation precautions and
diagram in this manual and Check all wiring
connections.
Whining or ticking noise when
engine is turned on
Amplifier is picking up alternator or
radiated noise.
Turn down input gain.
Move audio cables away from the power
wires.
Check the power and ground connections
on the amplifier and install an in-line noise
filter on the stereo’s power wires.
Check alternator and/or voltage regulator.
Test for a weak battery or add water to the
battery.
Troubleshooting
AD600.5 COMPACT 5/4/3 CHANNEL AMPLIFIER
14
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