Owner's Manual

VIII. TROUBLESHOOTING
Symptom
No sound
On/standby indicator
not lit
No sound
On/standby indicator
remains red
14
Action
Ensure the main power switch is on. This switch is located at
the back of the subwoofer.
Ensure the power cord is connected to the subwoofer and
plugged into a live AC outlet.
Check the main fuse located in the power cord socket and
replace as required. If the new fuse also blows, the subwoofer
amplier requires service.
All PSB subwoofers utilize signal sensing auto on/off circuitry. If
no signal is sent to the subwoofer, it will not power up and the
front panel on/standby indicator will remain red. When using
the subwoofer output of a receiver or processor, no signal may
be immediately present in this output. The subwoofer will only
power up when bass signal appears at the subwoofer input.
If the low level cable or speaker cable connection is poor or
has been severed, the subwoofer will not power up. Swap
cables to determine if this is the source of the problem.
To ensure the problem is not associated with the subwoofer,
rapidly disconnect and connect the subwoofer low level or
high level input. If the subwoofer on/standby indicator then
illuminates green, the receiver/processor/amp may not be
sending a signal to the subwoofer. When driving the low level
inputs from a subwoofer output, ensure the receiver/processor
is correctly configured to provide signal at the subwoofer
output.
Further, a red on/standby indicator can be caused by an
overvoltage or undervoltage condition at the AC outlet.
The indicator will also turn red during abnormal operating
conditions such as excessive internal temperature or a
presence of DC voltage at the amplifier output, in which case
the subwoofer needs to be serviced.