Early 2011 MacBook speakers appear quieter this usual, easy fix?

Hello

I have a MacBook 2011 beginning El Capitan (version 10.11.2) running. The speakers on my mac have been quiet for awhile, but sometimes they seem to generate in life and give me the original strong output, what they did when I came to the computer.

As they can occasionally give me the power output I don't think it's an ongoing problem, but I'm at a loss on how to solve this problem, maybe some needs bit cleaning but its really difficult to get access to the speakers.

This problem affects the sound regardless of the application, I use for example iTunes or iPlayer and I tried to play in the system preferences and check that the volume is full enough, but the max volume seems to come and go, as it's easier to listen to the TV shows frequently with headphones to make sure that I can hear them properly.

The headphone output seems not affected by this problem and I run Apple Hardware test and it came not with all the problems.

Quick solutions or I need to see the guys at the genius bar or is it irreparable?

Thank you

Reset NVRAM could solve the problem.

Tags: Notebooks

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    Click the [Support] links to help with non-Apple products.

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    A lot of time to start

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    [Data sheet] - [User Guide] - [warranty & Service]

    MacBook Pro - model: MacBookPro8, 3

    1 2.2 GHz Intel Core i7 CPU: 4 strands

    16 GB expandable RAM - [Instructions]

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    BANK 1/DIMM0

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    AMD Radeon HD 6750M - VRAM: 1024 MB

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    Apple Inc. FaceTime HD camera (built-in)

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    Apple Inc. Thunderbolt_bus.

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    None

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    [ongoing] com.adobe.acc.AdobeDesktopService.108832.C4A769B6 - 09C 4-418 b - A723 - 4962A991F3D5

    [ongoing] com.Adobe.accmac.245152

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    [ongoing] com.wacom.TabletDriver.108512

    [ongoing] com.wacom.WacomTouchDriver.108192

    [ongoing] JP.co.Canon.cijscannerregister.120672

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    [operation] 183 tasks Apple

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    AdobeAAMDetect: 3.0.0.0 - SDK 10.9 (2015-12-05) [Support]

    FlashPlayer - 10.6: 21.0.0.197 - SDK 10.6 (2016-03-24), [Support]

    QuickTime Plugin: 7.7.3 (2016-02-03)

    Flash Player: 21.0.0.197 - SDK 10.6 (2016-03-24), [Support]

    Default browser: 601 - SDK 10.11 (2016-02-03)

    JavaAppletPlugin: 15.0.1 - 10.11 (2013-02-23) check the version of the SDK

    WacomNetscape: 2.1.0 - 1 - SDK 10.8 (2013-06-05) [Support]

    Web of Google Earth plugin: 6.0 (2011-03-23) [Support]

    Silverlight: 5.1.40728.0 - SDK 10.6 (2015-11-06) [Support]

    WacomTabletPlugin: WacomTabletPlugin 2.1.0.2 (2013-06-05) [Support]

    iPhotoPhotocast: 7.0 - 10.8 SDK (2013-04-24)

    User Plug-ins internet:

    OctoshapeWeb: SDK-1.0-10.8 (2013-11-04) [Support]

    Safari extensions:

    Turn Off the Lights (2014-07-06)

    Add to Amazon wish list (2013-12-12)

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    Flash Player (2016-03-19) [Support]

    Logitech Control Center (2013-09-07) [Support]

    MacFUSE (2008-12-19) [Support]

    Yamaha Steinberg USB (2012-09-24) [Support]

    Time Machine:

    Skip system files: No.

    Mobile backups: WE

    Automatic backup: YES

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    Macintosh HD: Disc size: 398,49 GB disc used: 347,22 GB

    G drive: disc size: 999,86 GB disc used: 280,28 GB

    Destinations:

    WD_Backup [network]

    Total size: 996,41 GB

    Total number of backups: 0

    An older backup: -.

    Last backup: -.

    Backup disk size: too small

    996,41 GB backup size < (disc 627,50 GB X 3)

    Top of page process CPU:

    7% adobe CEF Helper (4)

    4% kernel_task

    3% photolibraryd

    com.apple.photos.ImageConversionService (2) 2%

    2% ScreenSaverEngine

    Top of page process of memory:

    1.07 GB kernel_task

    754 MB ocspd

    459 MB com.apple.WebKit.WebContent (4)

    Mds_stores 229 MB

    213 MB mdworker (13)

    Virtual memory information:

    7,58 GB of free RAM

    8,41 used GB RAM (4.19 GB being cached)

    Used Swap 0 B

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    April 2, 2016, 22:36:14 ~/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2016-04-02-223614_ [redacted] .crash

    System/Library/Frameworks/WebKit.Framework/versions/A/XPCServices/com. Apple.We bKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

    April 2, 2016, 22:33:35 /Library/Logs/DiagnosticReports/apsd_2016-04-02-223335_[redacted].crash

    /System/Library/PrivateFrameworks/ApplePushService.framework/APSD

    April 2, 2016, 22:23:43 Self test - passed

    April 2, 2016, 17:26:37 /Library/Logs/DiagnosticReports/apsd_2016-04-02-172637_[redacted].crash

    April 1, 2016, 18:28:56 /Library/Logs/DiagnosticReports/iTunes_2016-04-01-182856_[redacted].cpu_resourc e.diag [details]

    /Applications/iTunes.app/Contents/MacOS/iTunes

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