Fix Your Stuff Community Store

Model A1502 / 2.4, 2.6, or 2.8 GHz dual-core Intel processor / Released October 2013

552 Questions View all
Question Closed

Options

WiFi not working after changing 3 wifi card- I/o flex changed still

I need your help,

I currently fix Cell Phones and other laptops and MacBooks too. I don't have much idea about reading schematics. I do have a multimeter, analog and digital

Problem is no WiFi only shows Bluetooth as being descoverable but won't connect

Tried changing the the WiFi card replaced with 3 different cards, erased the full system and reinstalled the OS. Cleaned the I/O board and the flex. Tightened the flex with little extra paper, still same problem but after removing card no Bluetooth option to turn on, no option in network for WiFi tried SMC & PRAM reset nothing helped,

Please help me find the problem, my deep respect for all my experts thank you!

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Block Image

Update (08/21/2017)

Change the i/o board flex still same please what what to do next can any boday help me check the component voltage and correct board view file

Answer this question I have this problem too

Is this a good question?

Yes No
Score 0
2 Comments

Did you order the part from iFixit?

by

No I get it from my local store

by

Add a comment

2 Answers

Filter by:
Most Helpful Newest Oldest
Most Helpful Answer

Options

Make sure PP3V3_S4 and PP5V_S4 are making it to the I/O board by measuring J9500, preferably by checking on the I/O board itself. Check all the AP, clk and L signals related to WiFi on J9510, make sure the reset signals aren't stuck on low.

Ensure 100% that you have tried a known working (not taking someone's word for it, make sure these work in another late 2013) I/O board, cable and Wifi card; make sure they are exactly the same versions as the original parts.

TBH, the wifi is pretty solid on the Retina models; they are not like the older models where the ferrite beads on the board tend to burn out. If it is not the parts listed, it is going to be something miserable on the logic board, most likely the PCH.

Was this answer helpful?

Yes No
Score 3

1 Comment:

Thank you for all of your help I finally change the I/o board and wifi working but Bluetooth paired but disconnect imediatly

by

Add a comment

Options

A common issue with this model when you have WiFi issues is a bad Right I/O Board Flex Cable Apple P/N 923-0559.

As you already swapped out the AirPort board (the correct one I hope) Thats what I would try next.

Was this answer helpful?

Yes No
Score 2

5 Comments:

I order the parts it will be here on 19th of this month I will let you know- and if there is any way I can measure the connection from one point to another coz I am diying to see its work and I want to fix it if I need to run a jumper I am ready to do-- to be honest I order this Mac for my sister from eBay but the guys says no return! So I can't return it too but tried to check connect with board view but I can't find this connector pin

by

I'm starting to think you still have a bad AirPort board here.

You're going to need to find someone with the exact same model system to test your AirPort board out in.

by

I tried with other MacBook it's work fine

by

Then that leaves the Right I/O board it's self is bad as that's the only other part involved here other than the antennas them selves.

Maybe we need to start afresh here... before you started altering things what was the symptoms of the problem. Did you get your system wet at all, drop or bang it?

by

No bro nothing no wet no drop

by

Add a comment
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 1

All Time: 191