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#420138 - 08/21/16 10:57 PM Loud, like loud, humming noise AA connected power
aabouganem Offline
veteran

Registered: 12/27/04
Posts: 100
Loc: Houston, Texas, USA
Hello
I recently moved, and previously I used the AA for about 2 days before packing it back into its original box. These two days the AA was perfect, both when connected to the power supply, and when operating in battery.

But now that I have unpacked it for a second time, there is this loud humm when the speaker is connected to the power supply. It its loud enough to prevent me to keep it plugged and on. I only plugged it with the AA off to charge the battery, then unplugged it to listen to it.

I know that the humm might be a very bad ground loop in the new house, but its so loud, that I got concerned. The 4-pin connector and the computer with DSP I would presume that it was kind of controlling better the bad grounds, but its loud.

I will have to get some measurements in the house to see how bad the ground is (electrically speaking), as one of the repairs the seller performed was to fix the grounding clamp of the house. But as nothing else in the house seems to be working abnormally or making noises, I am scared that something broke down during moving.

Any suggestion is welcome

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#420139 - 08/22/16 12:28 PM Re: Loud, like loud, humming noise AA connected power [Re: aabouganem]
Adrian Offline
axiomite

Registered: 12/27/08
Posts: 6878
Loc: It's all about the location.
I would try your AA in a different location first, just to make sure it's not interference/issue in your home.
_________________________
Half of communication is listening. You can't listen with your mouth.

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#420262 - 09/08/16 08:20 AM Re: Loud, like loud, humming noise AA connected power [Re: aabouganem]
Andrew Offline
Axiom Engineer
local

Registered: 12/18/01
Posts: 275
Hi aabouganem,

Were you ever able to get to the bottom of your noise problem?

Thanks,

Andrew

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#420392 - 09/20/16 03:10 PM Re: Loud, like loud, humming noise AA connected power [Re: aabouganem]
aabouganem Offline
veteran

Registered: 12/27/04
Posts: 100
Loc: Houston, Texas, USA
Andrew,
No I haven't. All outlets in the home produce same noise. I only plug the AA to charge overnight, and listen to it from battery due to this issue. Next step is to take it to a neighbor house, but I am swamped at work. Question: is the power supply off-the-shelf? Can I get a similar one and test?

Thanks

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#420522 - 09/30/16 09:35 AM Re: Loud, like loud, humming noise AA connected power [Re: aabouganem]
Andrew Offline
Axiom Engineer
local

Registered: 12/18/01
Posts: 275
Originally Posted By aabouganem
Andrew,
No I haven't. All outlets in the home produce same noise. I only plug the AA to charge overnight, and listen to it from battery due to this issue. Next step is to take it to a neighbor house, but I am swamped at work. Question: is the power supply off-the-shelf? Can I get a similar one and test?

Thanks


I'll ask Debbie to contact you to send out a new power supply.

Thanks,

Andrew

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#420690 - 10/09/16 09:48 PM Re: Loud, like loud, humming noise AA connected power [Re: aabouganem]
aabouganem Offline
veteran

Registered: 12/27/04
Posts: 100
Loc: Houston, Texas, USA
Andrew
I have moved from my address on record where my AA was sent
Ill send you a PM with the new address

Also, noted that when I powerup the AA with the charger plugged, is stuck booting and does not comes back to live. My wife found that out yesterday and I reproduced it today. If you send me some troubleshooting steps maybe I can do better and pinpointing the issue

Thanks

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