In Case Of Problems - PSB CWA-1 Installation Manual

XI. In Case of Problems
See your dealer if you require service. PSB dealers are equipped to handle
almost all problems. If you have moved since your purchase, the nearest
authorized PSB dealer should be able to help you. You may locate your nearest
PSB authorized dealer on-line at www.psbspeakers.com/r/list.html. If the
problem is not resolved, please contact us, providing the Model name, Serial
Number, date of purchase, dealer name, and a full description of the problem.
Symptom
No
sound/power
and indicator
LED not lit.
Indicator LED
will not change
to green.
Sounds
distorted
Hum
Action
Ensure the main power switch is toggled to the "on" position.
This switch is located at the front of the amplifier.
Ensure the power cord is connected to the amplifier and
plugged into a live AC outlet.
Check the main fuses accessable from the bottom of the
amplifier via the fuse cover. See Section VIII. Controls and
Connections. Replace as required. If the new fuse also blows,
the subwoofer amplifier requires service.
Ensure the amplifier's volume control is NOT in the minimum
counterclockwise position.
If the trigger switch is in the "music" position, signal sensing
auto on/off circuitry is engaged. If no signal is sent to the
amplifier, it will not power up and the front panel power indicator
will not illuminate green. When using the subwoofer output of a
receiver or processor, no signal may be immediately present in
this output. The amplifier will only power up when bass appears
at the subwoofer output.
If the low level cable or speaker cable connection is poor or has
been severed, the amplifier will not power up. Swap cables or
turn the trigger switch to the "on" position to determine if this is
the source of the problem.
Lower volume if the subwoofer begins to sound distorted to
determine if playback at a lower level solves the problem. If a
slight reduction in level solves the problem, were you being
realistic in your subwoofer level setting? If the distorted sound
remains at a low level, one or both of the woofers may be
damaged.
Hum that appears when using the amplifiers' low level input(s)
is usually caused by using an inferior, damaged, exceptionally
long low level cable or cables routed near high current wiring/
appliances. Replace/ shorten the low level cable connecting the
subwoofer to the source equipment (receiver or processor). Low
level cable runs of longer than 50 feet may require the use of a
line driver (not available from PSB).
Decreasing the volume control of the CWA-1 and increasing the
volume control of the receiver/processor/amplifier subwoofer
output can sometimes reduce hum to an acceptable level.
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