跳转到主内容

发布于 2012 年 6 月, 型号 A1278. Intel 处理器,支持 Turbo Boost, 最多 512 MB DDR5 显存

1299 个问题 查看全部

Internal microphone recognized, but no sound input

I have a 13” Mid-2012 MacBook Pro (MD101LL)

The internal microphone is shown in prefs but non-functional. Built-in internal speaker works fine, iSight camera video works fine.

Not sure if software or hardware issue - no issues found with Apple diagnostic test. Here are some screenshots:

Block Image

Block Image

回答此问题 我也有这个问题

这是一个好问题吗?

得分 0

评论:

Well as you didn't post any graphic of the input volume setting for the mike, I have to ask if the microphone input level is turned up high enough and/or if there is a mute function on that computer for the microphone? Wouldn't be the first time I've seen that kind of omission. :-)

完成的

No sound input even when input volume is maxed. Same with ambient noise reduction on or off. No mute option shown for the internal mic in system prefs or anywhere else I can see.

完成的

添加一条评论

2个回答

最有帮助的答案

Been there, done that. Did you open the system and not remove the LVDS bracket thinking it’s optional? That will do it.

It’s best to replace the mic after this error since the wires will never be secure again as there is no tolerance to replace the connectors and you will probably break them if you lift it up for some retention (and ruin the mic). If you can reinstall the wires and keep them in with some confidence it won’t happen again easily, you may be able to rewire the mic and save your money. To do this, it’s best if you have the original Apple tape to reduce the chances of the mic failing without warning again. Eventually it’ll happen again, so if you run into an issue again remember to check the mic first. If you depend on it, replace it so you know it will not be an issue going forward.

Also if you take this to a repair shop please warn them you rewired it to save the mic so they know they need to be careful with the microphone you broke. Don't try and hide it.

Reference this photo for the rewiring:

Block Image

这个答案有帮助吗?

得分 1
添加一条评论

ZT, why do you think the mic input isn’t working? What are the observed symptoms? (May seem like a strange question, but could be important to troubleshooting.)

这个答案有帮助吗?

得分 0
添加一条评论

添加你的答案

ztwrigh 将永远感激不已
浏览统计数据:

过去的24小时: 0

过去的7天: 0

过去的30天: 2

总计 33