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MBP 17" report, occasional white noise from right speaker

My 2.16Ghz MBP with 100GB 7200rpm drive and 1GB memory arrived a few days ago. Since then I have been installing software, running apps, and generally putting it through it's paces. I have also added a 1GB stick from Crucial. On the whole the MBP has been great, except for a few (hopefully minor) problems:

1. It gets quite warm on the left palmrest, and gets uncomfortably hot between the keyboard and the screen. This is just during casual use, web surfing, downloading updates etc. The case temperature is about the same as my old 667MHz TiBook after it had been at 100% CPU for several hours (encoding video). I dread to think how hot the MBP will get doing something demanding.

2. When closed the screen appears to be slightly bent, the gap at the two front corners is about 1mm wider than the gap at the latches.

3. I have started to get hard crashes during the boot up sequence. Specifically after the grey apple I get the greyed-out multi-language reboot message and have to reboot. If I continue trying to reboot it eventually manages to get past the grey apple and boot up normally (usually this takes 2 or 3 attempts). I suspect this is due to something I've installed, possibly some Canon software for my MP750 printer.

4. I have now heard a white noise/static sound coming from the right speaker on 5 occasions. Three of those occasions were while booting (one of them was when I first turned the MBP on! Not a good sign). The computer boots normally, but with this strange noise! The other two times where when I was launching apps. On each occasion the noise lasted about 3-5 seconds before stopping. It's more of a hissing noise, not a mooing or a whining noise. It sounds exactly like the speakers on a vinyl record player when the needle is in between songs.

Obviously all of the issue are annoying. However I'm only REALLY concerned about item 4. Item 1 was kind of expected after doing some pre-purchase research. Item 2 is annoying in a £1800 laptop, but I can reluctantly live with it. Item 3 is frustrating but I'm sure I can 'cure' it by removing software (it only started happening after a day or two of fairly heavy use). Item 4, on the other hand, is intolerable 🙂

Anyone have any suggestions? Advice appreciated. The nearest Apple store is about an hour away, so advice other than "take it to a Mac 'genius'" would be appreciated.

17" MacBook Pro 2.16GHz Mac OS X (10.4.6) 2GB RAM

17" MacBook Pro 2.16GHz, Mac OS X (10.4.6), 2GB RAM, 7200rpm 100GB HD

Posted on Jun 13, 2006 9:19 AM

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7 replies

Jul 11, 2006 5:02 AM in response to Timothy Houghton

Well, that was 15 minutes of life wasted typing out the above post that I'll never get back 🙂

I was hoping for some sort of 'expert' advice from all the users here with thousands of posts. Evidently not.

Anyway ... I have (kind of) fixed the problem myself. Resetting the power management unit almost completely solves the static noise problem. I say almost, because since resetting the PMU (about 2 weeks ago now) I have heard the static noise ONCE. This is compared to hearing it around 3 or 4 times a day prior to the PMU reset.

This at least makes me slightly more confident that this is a software/firmware glitch, rather than a hardware fault.

Hope this helps someone.

Aug 28, 2006 5:53 AM in response to David Lipps

I spent a frustrating hour on the phone with Apple, and they eventually suggested a Power Management Unit (PMU) reset. Google should be able to find instructions (it involves removing the battery). This seemed to fix the static speaker problem for several weeks, but it has recently started doing it again. I haven't yet tried a new PMU reset, but will soon.

Hope this helps.

Jun 21, 2007 1:58 PM in response to Timothy Houghton

David, don't know if you're still living with the static hissing noise, but mine has been completely fixed! I had to take the MBP in when my battery swelled up to double it's size, and they figured out that it was the right fan was making that noise while it spins up to speed. Once it hits full speed the noise stops. That's why we only heard it during wake and boot. They replaced my fan, and I haven't heard the noise in months 🙂

MBP 17" report, occasional white noise from right speaker

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