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Various audio problems with macbook pro

Hello all, I am posting here before I go through the trouble of trying to get my macbook replaced.

My laptop, which I bought around 3 weeks ago, is a 2.5ghz (upgraded processor) penryn 15" macbook pro. If it's worth anything, it's the model with a 512mb graphics card. I also upgraded the hard drive to the 7200 rpm version.

Anyways, I have been having problems with the right speaker as well as the sound in general. It was working perfectly until one day when I was watching a youtube video and the right speaker suddenly cut out. The only sound was a very high pitch whine that seems to constantly come from it until the speakers cut out to save power or whatever they do.

Now I know that hearing worsens with age, and I think that it's possible some older owners cannot hear this if they have the same problem. I am 18 and can hear it, my parents, on the other hand, cannot. It sounds almost exactly like it does when your ears are ringing, except higher-pitched.

As if listening to one speaker (the left one) and a high-pitched whine that hurts your ears after awhile isn't enough, I am also having problems with headphones. First, I am 100% positive that the headphones are completely functional as I also use them on my ipod and a PC (I also tried a second set to be sure). When they're plugged in, there is a constant static sound (until the sound cuts out to save power, that click is also really annoying), and when the system transmits a sound there are random beeps. It literally sounds like an R2D2 crawled into each of my ears.

Another thing I'd like to point out: when I restart my computer, both speakers broadcast the bootup sound perfectly. In fact, the right speaker continues to work for several seconds after logging in before it goes back to it's broken and whiny state. This makes me think it's a firmware problem.

Any help would be appreciated.

- Kyle

P.S. I have installed everything available from system update.

2.5ghz Penryn Macbook Pro, Mac OS X (10.5.2)

Posted on Mar 19, 2008 9:39 PM

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50 replies

Aug 29, 2008 2:51 AM in response to mrkyle72

People,

I can't believe what I just discovered. I don't know if this has been said before but I discovered a work around for the r2d2/hiss problem. This quickfix does not involve buying any extra hardware, nor a special audio device.

*My problem is the following: When ANY sound stops playing I can hear beeps and blops like R2D2... For a delicate ear... that is VERY annoying. I could not listen to any song on iTunes without being followed by R2D2/hiss at the end. It wasn't less annoying to try and play MIDI instruments, because as the note dropped, I could hear the beeps... and hisses... and blops...*... Ahh... Annoying....

Tonight (after two weeks) I suddently stopped listening to them. So I thought "AHA! Something that I did must have stopped them!!!"... So... I started to trace everything I before that point that could have solved the R2D2 and hiss case... UNTIL I found posible actions to solve the problem and finally, I narrowed all my attempts into just one that really worked.

Just try this and let me know if it works:
1. Plug headphones.
2. Play a song in iTunes with headphones.
3. With song being played, with headphones close the lid.
4. Open the lid and see if the R2D2 and his hiss are still there when playback is resumed.

I tried this a lot of times and had a 100% success rate. This makes me wonder if its really a hardware issue or a software issue.

After trying this I could still listen to very very very sporadical and very very very low volume beeps.

Anyone has any thoughts to share?

Various audio problems with macbook pro

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