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
position
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
impedance at speaker terminals. Also check for
adequate air flow around the amplifier.
•
Voltage protection engaged. Voltage to the amp is
not within the 9-17 VDC operating range. Have the
battery/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
an 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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