Troubleshooting - GME GA9800 Instruction Manual

please note: Before moving your amplifier, refer to the list below and follow the suggested procedures. ALWAYS test the
speakers and their connecting wires first .
PROblEm
no output
only 1 channel is working
Weak output
noise in the audio
G A 9 8 0 0

TROUblEShOOTINg

ChECK ITEm/SOlUTION
1 . confirm all terminal strip connections are secure and tight .
2. Check both in-line and built-in fuses. Both the '+ 12V' and the 'REMOTE' terminal
must have + 12V referenced to chassis ground.
3. Confirm the audio signal source [radio, equalizer, etc.] is connected and is supplying
output signal. To check if the amplifier is supplying signal, unplug the RCA cables from
the signal source [but leave them plugged into amp]. Briefly tap the centre pin of each
of the disconnected RCA plugs with your finger. This should produce a noise [feedback]
in your speakers .
1 . confirm all speaker strip connections are secure and tight .
2. Check the 'BALANCE' control on the head unit [or other source] to verify that it is set
to its midpoint .
3. If you are using the Low Level RCA input, reverse the input plugs at the amplifier
[switch the R with the L]. If the channel which is silent switches to the other side,
the problem is either in the head unit/other source or the connecting cables .
re adjust the input sensitivity control to better suit input signal .
1. If the noise is a 'whine' whose pitch follows the engine speed, confirm that the
amplifier and any other signal sources [head unit, etc.] are properly grounded.
2. If the noise is a 'clicking' or 'popping' noise whose rate follows the engine speed,
this usually means the vessel is equipped with resistor spark plugs and wires, or that
the ignition is in need of service .
3 . check the routing of the speaker and input wires to make sure they are not adjacent
to wires which interconnect lights and other accessories . if the above steps fail to
improve or clear noise interference, the system should be checked by a professional
marine audio installer .
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