23
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. Readjust 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. No output
•
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 9-16 VDC operating range. Have the battery/
charging system inspected.
•
Possible short circuit. Check speaker wiring. Must
completely turn off amplifier and restart to resume play.
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: After using all the troubleshooting tips above, if the Status L.E.D. is activated and glows RED with no speak-
ers connected to the amplifier, and all the power connections are correct, this would indicate an internal problem
with the amplifier. Contact PowerBass USA or your local dealer.
