6
Troubleshooting
The LED mounted on the end panel of the amplifier lights up in two different colors
depending on the condition of the amplifier. Green indicates that the amplifier is turned on
and no trouble exists. When it turns red this indicates that the protection circuit has been
engaged. The LED on the top of the amplifier chassis indicates that the amplifier is on.
When the protection circuit is engaged, this LED turns off.
Green power indicator off, no output:
• With Volt Ohm Meter (VOM) check:
1. +12v power terminal
2. Ground terminal
3. Remote turn-on lead
Green power indicator on, no output:
• Check RCA connections
• Test speaker outputs with known good speaker
• Check function of source unit
• With VOM in AC volts position check RCA for signal
No output from one channel:
• Check RCA and speaker connections for that channel
• Swap RCA connections from left to right
• Swap speaker connections between channels
Red LED protection indicator is lit and there is no output:
Case 1: Amp is very hot
• Thermal protection is engaged. Check for proper impedance at speaker
terminals. Also check location of amplifier to ensure proper air flow
around heatsink.
Case 2: Output resumes momentarily when system is
turned off and back on.
• Short circuit protection is engaged. With VOM check for short between
speaker positive and negative, and between speaker terminals and ground.
Alternator noise (a whining that varies with engine RPM)
• Make sure that the ground for the source is as short as possible and
connected to bare chassis metal. The stock radio ground may not be sufficient.
• Check RCA cable routing and condition. Keep RCA cables away from all
power wires.
