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High pitched hum with Mac Mini.
#378149 06/08/12 05:30 PM
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This sort of thing always reminds me of Christmas Vacation's Grandma saying "it's making a funny squeaking sound". So we're all at my brother- in-laws and he has a Mac mini connected to a pioneer avr, amongst other connections like blu ray and wii. Only when feeding from the mini does he get a high pitched whine, both with streaming and disc play. Not a 60hz noise, but much higher. He does not have cable TV and all electrical connections run thru a 2-prong plug, so no ground-loop issue.

Any thoughts?


Scott

My HT
Re: High pitched hum with Mac Mini.
a401classic #378150 06/08/12 05:42 PM
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What output is he using on the mini? And what generation of mini is it?


I am the Doctor, and THIS... is my SPOON!
Re: High pitched hum with Mac Mini.
Ken.C #378151 06/08/12 05:58 PM
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HDMI from mini to avr. About this mac says mid 2010, 2.4ghz IC2Duo, running OSX Lion.

While looking at connections, he does have a cable modem, but he's using the Ethernet connection from modem to mini...


Scott

My HT
Re: High pitched hum with Mac Mini.
a401classic #378153 06/08/12 06:20 PM
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Hmm. So not so easy to just plug in a pair of headphones and see if you hear it... might be worth a go anyway. Just see if it's a software thing or a hardware thing.


I am the Doctor, and THIS... is my SPOON!
Re: High pitched hum with Mac Mini.
a401classic #378154 06/08/12 06:29 PM
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You will need to buy a white, proprietary Apple de-squeaker. They are a bit pricey, but your life will be better with it of course and you will never know what you did without it. There will be a newer de-squeaker out next year that won't be much better, but you will be convinced through clever marketing that you need it. You seem smart enough to know that is just a rouse since you already own a 2 year old Mac...

Sorry, I couldn't resist.


Farewell - June 4, 2020
Re: High pitched hum with Mac Mini.
nickbuol #378156 06/08/12 06:46 PM
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Smart, of course wink but also very gullible. Search for de-squeaker turned up nada. A link, perhaps?


Scott

My HT
Re: High pitched hum with Mac Mini.
a401classic #378161 06/08/12 07:38 PM
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I've heard that type of noise before, but it was always the analog sound card picking up something from within the computer. HDMI should be digital all the way, so noise shouldn't be able to sneak in.

In other words...I dunno.


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
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-Chris
Re: High pitched hum with Mac Mini.
a401classic #378179 06/08/12 09:45 PM
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I actually own a de-squeaker...

This picture is almost a year old, but she is still compact and really has a knack for ripping the squeakers out of her toys....




Farewell - June 4, 2020
Re: High pitched hum with Mac Mini.
nickbuol #378180 06/08/12 09:51 PM
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very nice photo of your dog (He speaks). :-)


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