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TROUBLEShOOTING GUIdE
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-BUY-HIFI (289-4434) or (760) 710-0992. The most common problems
relate to hook up. Call from your telephone extension nearest the system.
Symptom
No sound on
one channel
No sound on
both channels
Hum from the
speakers
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9901253-Rev-A-SI-2150Manual.indd 18
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Possible Causes and Test Procedure
Short circuit or loose wire at the speaker or amplifier 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. Disconnect 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
connect the two conductors at one end and test with a meter for
continuity.
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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6/8/12 9:43 AM
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