Troubleshooting - Directed Electronics Precision Power A1200/4 Owner's Manual

Thermal Protection engaged. The amplifiers will turn off and after a
minute or so will come back on (the status LEDs will extinguish). In
this case, ensure that there is nothing blocking the normal
convection airflow of the amplifier. No obstruction should be within
2" of the amplifier on all sides.
Note: Low battery voltage will cause the amplifier to run
warmer and possibly damage the amplifier.

TROUBLESHOOTING

NO SOUND Is the LED illuminated?
See your Authorized Precision Power
SOUND IN ONE CHANNEL ONLY
Reverse the left and right speakers by unplugging the speaker connector,
turning it over and plugging it back in.
YES
STILL NO SOUND
SOUND IS NOW IN
OPPOSITE CHANNEL
Reverse RCA inputs.
SOUND IS NOW IN
OPPOSITE CHANNEL
Reverse RCA inputs
at head unit.
SOUND IS NOW IN
OPPOSITE CHANNEL
Problem is in the head
unit or before the amplifier.
Check Power and Remote
turn-on wire for voltage.
Make sure the ground wire
is secure.
TM Dealer or call 1-800-62POWER.
SAME CHANNEL
Problem is in the speaker or
speaker wire of the silent
channel.
SAME CHANNEL
Problem is in the amplifier.
See your local Authorized
PrecisionPower Dealer or
call 1-800-62POWER.
SAME CHANNEL
Problem is in the RCA
cables.
28
NO