Skip navigation
This discussion is archived

Red Light coming out of headphone jack and low volume output

17836 Views 43 Replies Latest reply: Sep 10, 2009 10:18 AM by Scott Player RSS
1 2 3 Previous Next
BlueX Level 1 Level 1 (80 points)
Currently Being Moderated
Jul 12, 2009 2:10 PM
I just installed Windows XP on my 3.06 GHz MacBook Pro @ 7200 rpm using Boot Camp and after I installed the drivers included on the Mac OS X Install DVD, The max volume I received was only at about a 3 out of 10. Adjusting the volume doesn't do anything as it just stays on the same low volume output.

I also noticed a red light coming out of the headphone jack when there is nothing plugged in

What's weird though is that when I plug in headphones, the volume actually changes when I adjust it, but once it's unplugged it goes straight back to the red light and extremely low volume

Help?
17" 2.4 GHz MacBook Pro, 15" 3.06 GHz MacBook Pro Unibody 500 GB @ 7200 rpm, Mac OS X (10.5.7)
  • carl wolf Level 6 Level 6 (13,910 points)
    "I also noticed a red light coming out of the headphone jack when there is nothing plugged in"

    You can't see the red light when something is plugged into the jack, because there's something plugged into the jack, and that blocks the red light. The red light is the optical interface.
    I'm in "Shanghai", and I met Gong Li. Woohoo!!
  • Dr Sly Level 1 Level 1 (145 points)
    howdy, this happened to me before, once.

    fixed it but rapidly plugging a headphones jack in and out a few times, kinda like the problem the original iPhone had with headphone vs earphone modes not triggering properly.

    basically, some sensor malfunction whereby it still thinks that input/output X is available whilst it is input/output Y is the case.

    if it stays like that, have it fixed or replaced!

    good luck
     MacBook Pro 17" mid-2009  iPhone 3G  LED ACD  iPod Shuffle 3rd Gen , Mac OS X (10.5.7), Parallels Desktop and Boot Camp for Windows 7 (RC1) - 64 and Ubuntu 9.04 - 64
  • Travis A. Level 6 Level 6 (14,970 points)
    I also tried jamming a toothpick inside to turn it off which didn't work as well


    The toothpick is not a good idea. I would advise against doing that anymore. You stand to damage the port in ways that are not covered by your warranty.

    The only way to solve this is to plug and unplug a headphone plug into the port a few times. If that doesn't cure it, then the sensor itself is malfunctioning and will have to be replaced under warranty by Apple.

    --Travis
    Unibody MBP 2.4Ghz, 2GB, 250GB 7200RPM, Mac OS X (10.5.7), 8GB iPod Touch, Time Capsule, 20" Alu iMac
  • Travis A. Level 6 Level 6 (14,970 points)
    You're saying that the light turns off and the speakers work normally in OS X? If so, that's the very first time I've ever heard of this problem being software related, and not hardware. In every prior instance it has been related to the physical switch inside the port being stuck. Unplugging and replugging usually does the trick.

    --Travis
    Unibody MBP 2.4Ghz, 2GB, 250GB 7200RPM, Mac OS X (10.5.7), 8GB iPod Touch, Time Capsule, 20" Alu iMac
  • Sascha H-K Level 2 Level 2 (330 points)
    download the latest high def driver from realtek R2.28. (take care to choose the right one)

    you need to reboot twice to get the sound and NO redlight ...

    maybe you have to install it again and deinstall the "old" manually.
    MBP 17" 3.06 SSD, iMac 3.06, G4 1.42, macbook pro 17" 2.4 4Gb, iPhone16Gb .., Mac OS X (10.5.7), MBP 17" 3.06, MacPro 3ghz, 30", 23",20" displays, 5 airportExtreme ..
  • Sascha H-K Level 2 Level 2 (330 points)
    it's software related; with the right driver the sound becomes ok and no more redlight.

    some older mbp's need the sigmatel-driver from apple's original dvd ...

    driver has to be installed manually.
    MBP 17" 3.06 SSD, iMac 3.06, G4 1.42, macbook pro 17" 2.4 4Gb, iPhone16Gb .., Mac OS X (10.5.7), MBP 17" 3.06, MacPro 3ghz, 30", 23",20" displays, 5 airportExtreme ..
1 2 3 Previous Next

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.