Speakers knocked out receptacles ?


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Old 09-20-14, 03:48 PM
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Speakers knocked out receptacles ?

I wasn't sure which forum would be more appropriate, this ne or the one on computers since both are involved.

I bought some Logitech Z353 speakers for the computer, hooked them up like the instructions indicated and got good sound last night. Some time later I shut down the computer and turned the volume/on/off knob off on the main speaker.

this morning I started the computer, tuned on the speaker and no light to indicate power on it nor was there any sound. I rechecked my connections and all was good. Finally, I checked the power to the outlet it was plugged into and there was no voltage at all. So, I went to another outlet, checked there and there was 120.5v so I plugged in there...no power light or sound from the speakers.

I unplugged it, checked for voltage there and it was dead also. I went outside to check the breaker and none appeared tripped but I located the one that powered that room and reset it. It did no good as both receptacles are dead. Any receptacle I plugged it into died.

Oddly enough, I checked an adjacent bedroom and two of the four receptacles in there were dead and I hadn't plugged in anything in those for years. Any ideas what's going on?
 
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Old 09-20-14, 04:09 PM
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Maybe a connection loosened up randomly behind one of the receptacles on the affected circuit. This could well be at the last live receptacle in the chain as opposed to the first dead receptacle.
 
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Old 09-20-14, 04:11 PM
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Turn fully off then on all single pole 15 amp and 20 amp breakers. (You can't always tell if a breaker is tripped just by looking)If no luck you need to open the receptacles. Check to see if the wires are back stabbed. If so move to the screws.
 
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Old 09-20-14, 04:14 PM
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It's odd both receptacles in that room had power. The first one last night did and this morning it was dead when I turned the speakers on. That's why I went to the other receptacle. Could an internal short in the speakers cause this? It's strange those receptacles had power till the speakers were plugged in.

Something happened between last night when the speakers were working and when I turned them off. This morning they were dead.
 
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Old 09-20-14, 04:44 PM
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If there had been a problem with the speakers.... or the wall wart.... when you plugged it/them in you would have gotten a nasty fireworks show.

It would appear that the problem is coincidental to plugging in the new speakers.
 
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Old 09-20-14, 05:40 PM
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I just checked that power plug from the subwoofer and it reads infinity on the digital meter(OL).
 
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Old 09-20-14, 05:43 PM
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Infinity means open..... absolutely no continuity or resistance.
 
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Old 09-20-14, 05:51 PM
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S0, the subwoofer is gone.
 
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Old 09-20-14, 06:29 PM
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I was trying to find the manual on the Z-353 system and didn't find a listing.
Is that the correct system model number?

I believe your subwoofer turns on when it senses actual audio. Possibly it's not switching on.
 
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Old 09-20-14, 06:46 PM
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It's the Z-323 speakers.

Here's what they look like.

http://www.logitech.com/repository/1.../27252.1.0.pdf
 

Last edited by Kitch1916; 09-20-14 at 07:16 PM.
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Old 09-20-14, 07:27 PM
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Someone mentioned to me to check any GFI's I might have. I went to the only one I had, a hall bathroom right across from where the computer's located and reset it, went back to the receptacles that were dead and now both read 121v.

I'm a bit afraid of trying the speakers again, however. They may knock it out again.
 
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Old 09-20-14, 07:30 PM
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Sounds like your speakers have a ground fault. I'd take them back to where you purchased them and get a new set.
 
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Old 09-20-14, 07:54 PM
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I got them from Dell. Well, I got brave and plugged everything back up. The amber power light came back on the main right speaker and there's sound. Go figure?
 
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Old 09-20-14, 10:29 PM
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Joe is correct. I would say that if you have the problem again have the subwoofer speaker checked out. If the speakers really are the issue then without the GFI protection a dangerous fault condition could be present and it could damage your computer also.

On edit:
Logitech does not recommend servicing their speakers. No user serviceable parts inside.
 

Last edited by PJmax; 09-20-14 at 11:06 PM.
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Old 09-21-14, 08:04 AM
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Thanks everyone. I'm going to keep an eye out and a nose open for anymore trouble. This morning booted the computer and tried the speakers and both work as intended.
 
 

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