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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

My internal speaker doesn't work

dear team

i have a problem that broken jack inside my out put 3.5 sound and i couldn’t take it out and the problem now even the internal speaker not working i try every thing rest SMC update software every thing and still showing block its working only in booting the OS

but after that is showing no input

regards

Update (01/25/2019)

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It sounds (pun intended) like the operating system continues to think that there’s something plugged into the 3.5mm jack, so it turns off the speakers of your MacBook Pro. The cheap solution is to try to get the plug out of the port. If you do this, definitely deplete the battery/unplug it. Also, don’t keep it charger plugged in. I’d also leave the laptop sitting there for some time to make sure that all power is depleted from the system.

The expensive/safe solution, unfortunately, is to buy a new logic board, depending on your model.

2.5 GHz —> MacBook Pro 13" Unibody (Mid 2012) 2.5 GHz Logic Board

2.9 GHz —> MacBook Pro 13" Unibody (Mid 2012) 2.9 GHz Logic Board

Replace a 2.5 GHz logic board (motherboard) compatible with the Mid 2012 MacBook Pro 13" Unibody laptop. Included Ports: FireWire 800, Thunderbolt (Mini DisplayPort), 1000BaseT Ethernet, 2 USB 3.0, Audio In/Audio Out, SD card slot. Fix processing issues like unexpected shutdowns, reboots, or water damage.图片

产品

MacBook Pro 13" Unibody (Mid 2012) 2.5 GHz Logic Board

$119.99

Replace a 2.9 GHz logic board (motherboard) compatible with the Mid 2012 MacBook Pro 13" Unibody laptop. Included Ports: FireWire 800, Thunderbolt (Mini DisplayPort), 1000BaseT Ethernet, 2 USB 3.0, Audio In/Audio Out, SD card slot. Fix processing issues like unexpected shutdowns, reboots, or water damage.图片

产品

MacBook Pro 13" Unibody (Mid 2012) 2.9 GHz Logic Board

$155.99

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