Macbook Pro 13" A1278 820-2936-B three beeps

GfilipeZ

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Join Date: May 2021

Posts: 43

Country: Portugal
#1

Macbook Pro 13" A1278 820-2936-B three beeps

09-20-2021, 02:28 PM

Hi,

When i turn on the Macbook, it sounds 3 quick beeps each 3 seconds.
I've already swapped memories each slot; tested with new memories; checked screws on slot; checked pads soldered on Logic Board and still the same problem.

I read it also could be faulty Bios, or faulty graphic memorie? Am i right?

What else can i check?
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mon2

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Join Date: Dec 2019

Posts: 13846

Country: Canada
#2

09-20-2021, 07:35 PM

Re: Macbook Pro 13" A1278 820-2936-B three beeps

https://discussions.apple.com/thread/8489222
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GfilipeZ

Member

Join Date: May 2021

Posts: 43

Country: Portugal
#3

09-29-2021, 05:18 AM

Re: Macbook Pro 13" A1278 820-2936-B three beeps

Hi,

Still the same problem, 3 beeps, no boot no image.

Tried reset SMC and PRAM.
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Macbook Pro 13" A1278 820-2936-B three beeps

Macbook Pro 13" A1278 820-2936-B three beeps

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