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Groups > comp.sys.mac.portables > #1088

Re: Old MBP's headphone jack port don't always work with connected speakers.

Cross-posted to 2 groups.

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On 2017-02-10, Ant <ANTant@zimage.com> wrote:
> In comp.sys.mac.portables Jolly Roger <jollyroger@pobox.com> wrote:
>> Ant <ANTant@zimage.com> wrote:
>> > In comp.sys.mac.portables Jolly Roger <jollyroger@pobox.com> wrote:
>> >> On 2017-02-08, Ant <ANTant@zimage.com> wrote:
>> >>> In comp.sys.mac.portables David Empson <dempson@actrix.gen.nz> wrote:
>> >>> 
>> >>>> A possible explanation is a faulty socket which is mistakenly activating
>> >>>> digital optical audio output rather than analog audio output. If it only
>> >>>> happens for some speakers, it might only be happening while the plug
>> >>>> from those particular speakers is connected - perhaps it is a slightly
>> >>>> different shaped plug which is falsely triggering the digital optical
>> >>>> output mode, or there could be a physical obstruction in the socket
>> >>>> which is preventing the plug from going all the way in, resulting in the
>> >>>> same effect.
>> >>> 
>> >>> I forgot to mention that these are analog speakers only.
>> >>> 
>> >>>> If the output was stuck in digital mode you would see a red light in the
>> >>>> socket when looking into it, but if it only happens while a plug is
>> >>>> inserted, it may be hard to spot.
>> >>> 
>> >>> Hmm, we never saw this red light before but then we don't have any 
>> >>> digital speakers.
>> > 
>> >> The output can still get stuck in digital mode; so you should look for
>> >> the red light to make sure it's not turned on.
>> > 
>> > OK. We will look for that. I never saw anything red. Does it show like a 
>> > red circle in that audio out hole with the audio cable connected?
>
>> Here are some YouTube videos that show it:
>
>> <https://duckduckgo.com/?q=mac+audio+red+light&iax=1&ia=videos>
>
> Interesting. I have never see these red lights before, but then I don't 
> use digital speakers. Same for "stuck" issue.

Like I said above, the port can get stuck in digital mode even if you
don't use digital speakers, which is why you should check it. ; )

-- 
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JR

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Thread

Old MBP's headphone jack port don't always work with connected speakers. ANTant@zimage.com (Ant) - 2017-02-07 00:41 -0600
  Re: Old MBP's headphone jack port don't always work with connected speakers. dempson@actrix.gen.nz (David Empson) - 2017-02-08 10:33 +1300
    Re: Old MBP's headphone jack port don't always work with connected speakers. ANTant@zimage.com (Ant) - 2017-02-08 02:14 -0600
      Re: Old MBP's headphone jack port don't always work with connected speakers. dempson@actrix.gen.nz (David Empson) - 2017-02-08 21:29 +1300
      Re: Old MBP's headphone jack port don't always work with connected speakers. Jolly Roger <jollyroger@pobox.com> - 2017-02-08 15:14 +0000
        Re: Old MBP's headphone jack port don't always work with connected speakers. ANTant@zimage.com (Ant) - 2017-02-09 03:02 -0600
          Re: Old MBP's headphone jack port don't always work with connected speakers. Jolly Roger <jollyroger@pobox.com> - 2017-02-09 13:11 +0000
            Re: Old MBP's headphone jack port don't always work with connected speakers. ANTant@zimage.com (Ant) - 2017-02-09 19:18 -0600
              Re: Old MBP's headphone jack port don't always work with connected speakers. Jolly Roger <jollyroger@pobox.com> - 2017-02-10 02:10 +0000
              Re: Old MBP's headphone jack port don't always work with connected speakers. Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-02-10 23:51 +0000

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