Troubleshooting Guide, Problem No sound

TROUBLESHOOTING GUIDE

If you experience a problem operating the SWA-500M, consult this guide ﬁrst. The most common problems relate to hook up or improper control settings. Try to isolate the problem and check the control settings to determine the fault and make the necessary changes. If the problem persists, or you have additional questions, contact your local Niles dealer or Niles Technical Support at 1-800-289-4434, 305-238-4373 or techsupport@nilesaudio.com.

PROBLEM: No sound

Solutions

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 short, 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.

PROBLEM: Hum or buzz sound from the loudspeakers

Solutions

Hum or buzz 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.

PROBLEM: Ampliﬁer will not turn on

Solutions

Check for faulty cables, faulty source material, an ungrounded phono system or a defective component.

AC power cord must be plugged into a working outlet.

Master power switch must be on.

PROBLEM: Bass sound is weak and the stereo image is “phasey” or “blurry”

Solutions

The loudspeakers are wired out of phase. Reverse the connections at the back of one speaker.