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2.4GHz, 2.7GHz, or 2.8GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.8GHz) with 6MB shared L3 cache. Released February 2013.

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Some keys are not working: 7ujm

I am having an issue with my laptop keyboard, it takes 3 seconds(sometimes longer or less) for my 7ujm keys to work on my MacBook Pro (Retina, 15-inch, Early 2013). I have cleaned the keyboard ribbon and it is not that. I have checked mouse keys, PRAM reset, NVRAM reset, clean installed Sierra and anything else I could find online about this issue. I have replaced the battery recently and this began shortly after, There was spillage in the laptop when I got it, but this has not effected the laptop before and like I said the keys work intermittently. I am assuming it is not corrosion and is a software issue as the keys often work best when the laptop has been off for a while and it is first turned on. If I plug in an external keyboard, the external keyboard works fine, but the keys on the keyboard in the laptop stay intermittent. Any help would be greatly appreciated. Thanks.

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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Here’s how to replace just the keyboard:

https://www.youtube.com/watch?v=dU48RuxR...

and a longer one:

https://www.youtube.com/watch?v=M0L38wDZ...

Here’s the part:

https://www.google.com/search?q=keyboard...

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Sorry your keyboard needs to be replaced you don’t have a software issue.

Let’s look at how a keyboard works… Think how a spreadsheet is laid out in columns and rows. Here the column is at an angle starting from the top with the 7 key, then down to the U, J & M keys. So the electric line that serves these keys likely has rotted out within the keyboard proper. Over time the junk that was still left from the spillage rotted the line out.

The easiest way is just replace the uppercase MacBook Pro 15" Retina (Mid 2012-Early 2013) Upper Case Assembly and here’s the guide MacBook Pro 15" Retina Display Mid 2012 Upper Case Assembly Replacement. Given the systems age you might as well replace the battery as well MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery as its just safer to replace than to try to reuse your battery. Here’s the guide for it MacBook Pro 15" Retina-scherm mid 2012 Vervanging van de batterij.

MacBook Pro 15" Retina (Mid 2012-Early 2013) Upper Case Assembly Afbeelding

Product

MacBook Pro 15" Retina (Mid 2012-Early 2013) Upper Case Assembly

$63.99

MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery Afbeelding

Product

MacBook Pro 15" Retina (Mid 2012-Early 2013) Battery

$71.99

MacBook Pro 15" Retina Display Mid 2012 Upper Case Assembly Afbeelding

Handleiding

MacBook Pro 15" Retina Display Mid 2012 Upper Case Assembly Replacement

Moeilijkheid:

Moeilijk

1 - 3 hours

MacBook Pro 15" Retina Display Mid 2012 Batterij Afbeelding

Handleiding

MacBook Pro 15" Retina-scherm mid 2012 Vervanging van de batterij

Moeilijkheid:

Moeilijk

1 - 2 hours

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john zal eeuwig dankbaar zijn.
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