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Appleの2世代目のiPad AirでWi-Fiモデルのみを対象をしています。モデル番号はA1566です。

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Missing pads PMIC U8100

Hello i have missing pads on U8100 ipad air 2 can someone tell me wich lines it is on the LTE boardview is different i need boardview of wifi model see picture the red dots.

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@refectio hi bro can you please help.

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All three pads are related to Radio features. I don’t have an Air 2 on hand but IMHO, these would be NC pads on a non Wifi pcb, which is probably why they lifted in the first place.

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Hmm the air 2 is working fine but i dont have any wifi it is connecting but no internet so i thougt that the missing pads was something with wifi thats why i asked for what the lines are and when i whant to change the date and time the settings app crashes now i dont know where to look

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Let me tell you from the beginning i bought this ipad it will only charge when the ipad is turned off sow ive read some commenta of you here and i changed the pmic now it charges great butt the wifi is not working its connecting butt no internet when i whent in google it says that the date and time is not set when i whant to change the date and time via settings the settings app chrashes i have a spare wifi chip butt its strange why i got this problem now any ideas @refectio

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Well, I just double-checked those missing pads and confirm they are for radio functions only and go to the part of the board that is unpopulated in a WiFi only device.

If you are having WiFi issues, check the power rails for that IC to insure they are at the proper voltage. If they can't be easily probed, then consider reballing your PMIC as it may not be sitting or connected properly. Also look for missing or dislodged components near the PMIC.

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Thanks mate can you give my a guide on wich components i can check a proper voltage for the wifi ic i can see on the schematics what voltages are going in the power rail butt i have no clue wich components where it is the software what i use there are no names on the components. @refectio

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Cemil Berk さん、ありがとうございました!
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