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Troubleshooting Guide - Niles SI-275 Installation & Operation Manual

Niles audio corporation systems integration amplifier installation & operation guide si-275.
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When there is a problem consult this guide first. If the problem persists, or you
have additional questions, call your local Niles dealer or Niles Technical Support
at 1-800-289-4434. The most common problems relate to hook up. Call from
your telephone extension nearest the system.
No sound on one channel
No sound on both channels
Hum from the speakers
Short circuit or loose wire at the speaker or amplifi-
er terminals. Check that the connections are secure
and that there are no loose strands of wire crossing
from the positive to the negative terminals at the
back of the amplifier and /or the speaker.
Short circuit or a break in the speaker wire. Dis-
connect the speaker wire at both ends, separate the
2 conductors at both ends and test with a meter for
a short circuit. If there is no short, connect the two
conductors at one end and test with a meter for
Speaker is not working. Connect the speaker to a
channel that plays another speaker.
Audio cable to input is bad. Connect another cable
that is known to be good.
Audio cable to the main inputs is bad. Connect
another cable that is known to be good.
Hum may be caused by a ground loop between
two of the other components in the system. To test
for another ground loop, try reversing the AC plugs
of each of the components in the system.


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