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G
TROUBLESHOOTING
Problem
No music signal on loudspeakers
and STATUS-LED on amp is red or off
A high-pitched buzzing sound
in- or decreasing with engine speed
Crackling sound in- or decreasing
with engine speed
Humming
IMPORTANT! The amplifier's protection circuitry will shut-off the amplifier in case of short-circuit, overload or DC offset at the speaker
out-puts or in case of overheat. In case the cause for protection shut-off has been eliminated, the amplifier will operate normally again
(LED on). Otherwise the amplifier will continue to switch on and off!
Cause
● + 12 V and/or GROUND (GND/ -12V) and/or "Remote" line not (properly)
connected
● Fuse on amplifier or distributor blown
● Main Fuse on car battery side blown
● Short-circuit on any of the speaker outputs
● DC voltage at speaker outputs
● Amplifier overload
● Amplifier overheated
● Bad ground (GND) conntact of amplifier or head unit
● Insufficiently shielded RCA interconnects and/or bad RCA cable routing
(inductive interference of on-board electronics)
● Insufficient interference elimination of ignition circuitry
● Sign of ground loop(s), i .e . multiple ground connections of the car audio
installation or parts thereof .
● Check also ground connections of all other audio components conncected
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