Question about Boston Acoustics MicroMedia Computer Speakers
There was an annoying humming sound coming from our Subwoofer. When I unplugged the power cord and plugged it back in the sound stopped, as did all sound coming from the speakers. I was able to shut down the computer and restart, and had sound again. But then last night same problem. Now I cannot get any sound from the speakers. My fear is the speakers are shot, we have had them for some time. Just wanted to make sure there was nothing else I should try before buying new?
The humming sound usually comes from the DC supply that is not filtered. The a/c converted or changed to DC needs to be "cleaned", before going into the ckt. Usually the capacitor and resistor network go bad, maybe causing the fuse to open. Even if you replace it, u may still have the "humming" because the circuit is still bad.
If you know how to look at the capacitor, resistor,or coils AFTER the diodes & replace the damaged part, u should be good!
Posted on May 18, 2008
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Posted on Jan 02, 2017
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