TROUBLE-SHOOTING
SYMPTOM: POSSIBLE CAUSE
No power:
Check voltage at amplifi er with a DMM (volt meter), B+ and REM (with source unit on) the voltage should register
between 12.2V-14.6V when using the attached ground lead of the amplifi er. Check fuse at amplifi er and at the battery. Use a
meter to verify connection from one end of the fuse to the other, breaks may not always be visible. If fuse is blown, check the
power wire and also the amplifi er for a short. If the short is in the power wire, repair it. If the short is in the amplifi er itself, see your
Phoenix Gold dealer. If no short is present replace the fuse.
Power without sound:
Turn the amplifi er off and check all input and output signal cables and
power connections. Check the speakers for shorts with a DMM (volt meter) or by connecting them to another audio source. After
making sure everything is correct, turn the amplifi er on again.
Power without sound and status LED is lit red:
A continuous red light of the power indicator signals a high internal operating
temperature, which results in the amplifi er switching off temporarily. When the amplifi er cools down to a safe level, the amp will
automatically restart. The continuous red light of the power indicator can also indicate a shorted speaker lead or battery voltage
that is either too high or too low for proper operation. Cycle power to reset this condition.
No sound from one side:
Check balance control. Check speaker connections. Check signal input connection.
Very low output:
Check your source unit’s fader control, or the amplifi er’s Input Sensitivity Level.
Frequent automatic amplifi er shut down:
This indicates that the amplifi er is operating at a
continually undesirable high internal temperature. High operating temperature can be caused by inadequate ventilation: Refer to
the sub-section titled LOCATION for better amplifi er location. High operating temperature can also be caused by an excessively
low impedance load. For instance below 2 ohms stereo or 4 ohms bridged. Check for bad speakers or bad passive
crossover components. If all else fails, try rewiring the entire system. High operating temperature can be caused by an incorrect
input sensitivity level, refer to sub-section titled
INPUT SENSITIVITY ADJUSTMENT.
“Motor Boating” - the power indicator going off repeatedly when the audio system is on:
Check the amplifi er’s connection
to the battery. Check battery voltage. If low, recharge or replace
battery. Check all ground connections.
Whining noise when engine is running:
Reroute power cable from battery to source unit directly (include fuse), bypassing the
battery terminal in the fuse box. Check power connections to be sure they are clean. Check the battery ground making sure the
battery terminals and chassis ground are clean. Run a ground wire from the source unit to the ground point of the amplifi er and
remove old source ground.
CAUTION: Do not disconnect the Power Amplifi er’s ground when the system is on. This could damage the amplifi er.
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