Insignia NS-P2000 - Manual (Page 10)

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Troubleshooting
Before removing your amplifier, locate the problem in the following
table. Always test the speakers and speaker wires before
troubleshooting the amplifier.
Symptom Solution
The amplifier
will not turn on. • Make sure that the amplifier has a good
ground connection.
• Make sure that the power at the remote
DC terminal is at least 7VDC.
• Make sure that there is battery power at
the positive (+) terminal.
• Make sure that all fuses are good.
• Make sure that the indicator LED is not
red. If the indicator LED is red, turn off
the amplifier briefly, then turn it back on.
A high hiss or
engine noise
(alternator
whine) is
audible in the
speakers. Disconnect all RCA inputs to the amplifier. If
the hiss or noise goes away, plug in the
component driving the amplifier and unplug its
inputs. If the noise goes away, start plugging
in the inputs until the noisy component is
found.
We recommend that you set the amplifier
input sensitivity as low as possible. This will
result in the best possible S/N ratio. Also, try
to drive as high a signal level as possible from
the head unit.
The indicator
LED turns red
when the
amplifier is
turned on. • Make sure that there are no shorts on
the speaker leads.
• Make sure that the volume control on the
head unit is turn down low.
• Remove the speaker leads and reset the
amplifier. If the indicator LED is still red,
the amplifier is faulty.
Note: To protect the amplifier from damage, it
will shut down automatically when its
temperature reaches 176°F (80°C).
The amplifier
gets very hot. • Make sure that the minimum speaker
impedance is correct.
• Make sure that there are no speaker
shorts.
• Make sure that there is good airflow
around the amplifier. In some situations,
a fan may be required for proper cooling
of the unit.