Is this a sudden onset problem or has it always done this?
Loose analog signal cables or any cabling run near power cables can induce 60-hz hum. Sometimes simply reversing an ac plug somewhere in the system can help.
If you can, move the whole system to another room and try it there. Consider things like track lighting lamps or variable controls.
Testimonial: "Changed out the AC plug and all is well now...Thanks very much"
Same problem here, but fiddling with cables doesn't seem to help. Any ideas?
Same problem here, but fiddling with cables doesn't seem to help. Any ideas?
OK not sure if this is any help but I had the same problem of high pitched constant sound coming out of my Logitech X-140 speakers and I had no idea had to fix it. Checked the forums and moved the sound input cable but it had very little effect on the constant high pitched noise coming from the speakers. Then I accessed the Realtek HD Audio Manager utility I have on my PC and accessed the Digital Input page. I accessed the "Real-time S/PDIF-In monitor" tab and it presented a page called "Realtek Digital Input Properties", here on the "Listen" tab page there was a check box next to "Listen to this device" - it was checked, I unchecked it and applied the change and the sound was gone!
That's good to know. I have an older Realtek sound card and it has Digital In and Out but no "Listen" button, just Output Sampling Rate and Output Source with check boxes for Output Digital Audio Source and S/PDIF In/Out Passthrough.
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No I think it was crossed over another cable, once I removed and replugged it in I have no problems, thanks again.
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