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

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Wifi huge problem, tried everything

No wifi option change 3 wifi card and rio board flex change OS X and tried pram smc reset not working, check the voltage in j9510

Pin4/2- no beep or value

Pin 4- pcie_ap_r2d_n

Pin2- pcie_ap_r2d_p

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Best not to open a second duplicate question.

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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.

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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

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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.

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I tried with other MacBook it's work fine

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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?

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No bro nothing no wet no drop

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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.

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

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Games Hub will be eternally grateful.
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