TROUBLESHOOTING TIPS
Problem
Solution
Power LED not ON
With a Volt Ohm Meter (VOM) check:
•
+12 Volt power terminal (should read +12 to +16VDC
•
Remote turn-on terminal (should read +12 to +16VDC)
•
Ground Terminal
Power LED lights BLUE, no output
•
Check RCA connections
•
Test speaker outputs with known good speaker
•
Substitute known good Source Unit
•
Check for signal on the RCA cable with VOM in AC po-
sition
Power LED lights BLUE, but volume
reduces automatically.
•
Advanced Protection Circuitry is engaging due to high
internal temperature of the amplifier. Amplifer requires
more air flow around the chassis. If this continues
choose a better ventilated mounting location.
•
High operating temperature can be caused by incorrect
input sensitivity level. Reset the GAIN contol.
Red Status Protection LED is ON, no
output and
1. Amp is VERY HOT
2. Amp shuts down ONLY when the
vehicle is running
3. Amp plays at very low volume
•
Thermal protection is engaged. Check for proper im-
pedance at speaker terminals. Also check for adequate
air flow around the amplifier.
•
Voltage protection engaged. Voltage to the amp is not
within the 10-16 VDC operating range. Have the bat-
tery/charging system inspected.
•
Short circuit protection is engaged.Check for speaker
wires shorted to each other or the vehicle chassis.
Speakers operating below the minimum impedance
can cause this to occur.
Alternator noise (varies with RPM)
•
Check for damaged RCA cable.
•
Check routing of RCA cable
•
Check Source Unit for good ground
•
Check amp gain setting, turn down if set too high
Poor Bass Response
Check speaker polarity, reverse the connection
of one speaker only.
NOTE: If the Status L.E.D. is activated and glows RED with no speakers connected to the amplifier,
and all the power connections are correct, this would indicate an internal problem with the ampli-
fier. Contact PowerBass USA or your local dealer.
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