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Intermittent White Noise from Sony STR-DH500

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Cerberus2k7

Drifto Mexicano
Joined
Feb 15, 2004
Location
Morris, IL
Hopefully someone can give me some ideas on how to stop this from happening, but I will just randomly get white noise blasting from my speakers and generally it happens late at night when I'm already asleep. So yes...kinda creepy too(queue poltergeist jokes). It happened in the summer when I lived in Tempe, Arizona and it has also happened in the winter in Denver, Colorado so I don't think it's an overheating problem per-se. And it has happened on different source selections. Its happened four times in the year that I've had it so it's not something that happens often. But when it does happen it's extremely annoying. In terms of how the media area is set up, it's like this:

HTPC>Video: HDMI - Sound: 3.5mm to RCA converter
Xbox 360: Video: HDMI - Sound: Optical
L/R bookshelf speakers: bare wire to banana twist connectors
Receiver then runs HDMI to the TV

In terms of other electronics that are on the same shelf in case EMI may be an issue, there's a Linksys E3200 and a Scientific Atlanta modem.

Wires are semi decent in terms of organization and from what I can tell there's no breaks in the shielding, and connections are tight except for the HDMI cable from the video card which has a break near the mini HDMI portion as the video will go out for a moment if you bump it..
 
Is everything related to the Audio system connected to a wall outlet? Using extension cords or powerstrips will cause your speakers to hiss and crackle bad.
 
does it happen when your AC or heater turns on. Do you what all is on that outlet (meaning what other outlets are connected together.) seems like a spike in your power.
 
Is everything related to the Audio system connected to a wall outlet? Using extension cords or powerstrips will cause your speakers to hiss and crackle bad.

It all goes into a surge protector, but there's no audio quality issues. It seriously sounds like someone cranks the receiver sound to 40(normally around 27-30) and puts the TV onto a station that just broadcasts snow. Never happened when the HTPC or 360 was in use. twice when I was asleep, and 2 more times just in the middle of the day. No real "symptoms" like HVAC or power surges before it happens that I can notice. Should also note that it doesn't stop until I turn off the receiver. I can turn it off then turn it back on right away and it's gone.
 
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It all goes into a surge protector, but there's no audio quality issues. It seriously sounds like someone cranks the receiver sound to 40(normally around 27-30) and puts the TV onto a station that just broadcasts snow. Never happened when the HTPC or 360 was in use. twice when I was asleep, and 2 more times just in the middle of the day. No real "symptoms" like HVAC or power surges before it happens that I can notice. Should also note that it doesn't stop until I turn off the receiver. I can turn it off then turn it back on right away and it's gone.

I had my audio devices running thru a power surge and an extension cord and I had the same problem only it was permanent. I had to run all my audio devices thru wall sockets only, to fix my problem. Since then, it has never occurred again.
 
I had my audio devices running thru a power surge and an extension cord and I had the same problem only it was permanent. I had to run all my audio devices thru wall sockets only, to fix my problem. Since then, it has never occurred again.

That's what throws me. If it's something that happens at regular intervals I could see that. But this literally happens once every few months. So it's either something with the receiver or something with the surge protector. Maybe too much of a power draw for this particular unit. But it's hard since I can't test it whenever I please.
 
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