One channel of output jack is not working.

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iMac Intel 27" EMC 2429

Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2

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Xaver von Treyer @xavervontreyer

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发帖于: 2012年8月2日

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One channel of output jack is not working.

Speakers are working fine. When i plug in a 4 pole mini-jack (like iPhone headphone or similar, the left channel either is completely gone or intermittent. When i plug in a standard stereo mini-jack (regardless wether headphones or jack to RCA cable) left side is missing completely or i get thge same signal as on the right channel aka it's mono). Has anyone experienced similar problems? I guess it's the jack connector but I'd like to be sure before i open or return the iMac as it's just 3 months old. Is it something that can be easily done (maybe loose solder joint etc...) If anyone has pictures of an open iMac same series with detail shot of the outputjack i'd be greatful. Any clues actually are welcome.

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exactly the same problem here, did you get round it?

由 Adam Bourn 完成的 2012年10月27日

If you want a work around purchase an external USB audio adaptor. USB audio is separate from analogue audio.

由 originalmachead 完成的 2012年10月28日

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Xaver von Treyer @xavervontreyer

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发帖于: 2012年10月29日

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I had to bring it to an Apple Service Center. They replaced the logic board under warranty...

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Great job, all you have left to do is to accept your own answer. Then everybody that looks for an answer to their problem, will know what works :-)

由 oldturkey03 完成的 2012年10月29日

@oldturkey: thx for the info. I am still getting aquainted with the structure of posting here. A bit confusing...

由 Xaver von Treyer 完成的 2012年10月30日

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If you want a work around purchase an external USB audio adaptor. USB audio is separate from analogue audio. — originalmachead
Great job, all you have left to do is to accept your own answer. Then everybody that looks for an answer to their problem, will know what works :-) — oldturkey03
@oldturkey: thx for the info. I am still getting aquainted with the structure of posting here. A bit confusing... — Xaver von Treyer

originalmachead @originalmachead 声誉积分: 116.3千 66 68 359 · Answer 1 · 2012-08-02T06:56:39-07:00

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originalmachead @originalmachead

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You should not be making DIY repairs on a 3mo. old machine of any type or make (unless you knowingly damaged it). Contact Apple. Audio jacks are not easily repaired, computer solder is of a special type and requires special tools and skills so as not to destroy the logic boards.

If this answer was helpful please remember to return an mark it Accepted.

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In what way is computer solder different?

由 Xaver von Treyer 完成的 2012年8月3日

Traditional acid core solder is capable of corroding board traces, generally its too thick or large In working with computer electronics, choose rosin core solder with a thickness of 0.75 mm., A normal, low-cost soldering iron is far too hot for delicate electronic work, additionally you need a soldering tip on your iron no larger than the connection you're soldering (many common irons are far too large). I'm assuming you've soldered a lot before? If not then it's going to be difficult, even for someone that's done a lot of soldering before its easy to overheat adjacent components, burn the board or bridge traces.

由 originalmachead 完成的 2012年8月3日

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iMac Intel 27" EMC 2429

One channel of output jack is not working.

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