Troubleshooting Reference Chart
15
Symptom:
Recommended Action:
No output Power indicator is off.
(There is a normal delay of up to 30
seconds on turn-on.)
Be sure power outlet is “live” Be
sure power switch is “on.”
No output Power indicator LED cy-
cles on and off.
This indicates a short-circuit condi-
tion on the output. Disconnect
speaker wires and turn amplifier
power switch on. If amp stays on,
the problem is in the output wiring
or speakers.
Power indicator on; no output from
one or more channels.
Check input level controls, input and
output cables, input signal and
speakers.
Low volume in one or more chan-
nels.
Check input level controls, input wir-
ing and input signal levels. Be sure
speakers are the same impedance.
Amplifier overheats and/or shuts off. Review section on Thermal
Considerations. Check clip lights for
indication of overdriving. (NOTE:
overdriving for a long period of time
can cause
thermal shutdown.)
Distorted output.
Check input signal level and
signal source. (Set gain by
turning amplifier volume all the way
down, set preamp level to normal,
turn up amplifier
volume to desired level.)
Noise on output.
Check signal source for noise. Long
unbalanced lines can cause noise,
change to balanced lines. (See set
gain above.)
