Need help identifying a resistor value (iPad 6 LTE/WIFI)

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iPad 6 Wi-Fi (A1893)

Tutoriels de réparation, informations de démontage et aide au diagnostic pour l'iPad Apple de 6e génération avec Wi-Fi, disponible avec 32 ou 128 Go de stockage. Sorti en mars 2018. Identifié par le numéro de modèle A1893. Équipé d'un écran Retina 9,7" et d'une puce A10 Fusion 64 bits.

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kylegp @kylegp

Rep: 13

2

Publié: 30 mai 2021

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Need help identifying a resistor value (iPad 6 LTE/WIFI)

If anyone has an iPad 6 (with cellular!, there was no cellular select option in the ifixit dropdown) and is able to measure a tiny resistor near the 610A3B tristar chip, as pictured, that would be great. It came off the board during a tristar replacement and no schematics are available. iPad air 2 schematics suggest it may also be 10K but I’m not 100% sure.

This would help immensely!

Répondre à cette question J'ai le même problème

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oldturkey03 @oldturkey03 Rep: 862,1k 1,5k 980 2,4k · Answer 1 · 2021-06-22T18:12:57-07:00

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oldturkey03 @oldturkey03

Rep: 862,1k

1,5k

980

2,4k

Publié: 22 juin 2021

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@kylegp great job on getting it fixed. As usual I am late to the party. This is actually more for my own learning experience with this iPad. I checked a few things and got really confused about the reference designators you guys were talking about. Looks to me like your missing component is actually R8399 which would make it a 0 ohm resistor. In that case and if I am looking at this right, you could have just used a jumper on it.

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bert.harmidomski @tojaert Rep: 5,5k 11 6 4 · Answer 2 · 2021-06-02T03:47:49-07:00

bert.harmidomski @tojaert

Rep: 5,5k

11

6

4

Publié: 2 juin 2021

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hi kylegbp,

I think this is a line named 12a3b_usb_brick_ID_R connected to R4001 6.34k 1/32W 01005 and goes to c4001 0.01UF 6.3V X5R 01005 on line 12a3b_to_PMU_usb_brick_ID (PMU position r13)

for checking me, find out c4001 parameters and confirm that here - next left capacitor on your picture

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I think c4001 is 10nf (0.01UF). iThanks tojaert, where did you get this information?

6 juin 2021 par kylegp

I look at the picture you posted - so small, 01005 and 10UF? Are we talking about the same capacitor? Check again line continuity.

6 juin 2021 par bert.harmidomski

@tojaert Please check again, I didn't say 10UF. I wrote 10nF.

I believe it's the same as what you posted, just wondering where you got the information from?

0.01UF = 10nF.

6 juin 2021 par kylegp

:-) yes, absolutely right (looked different, my mistake. Too fast today, sorry). I took this value from my experience and knowledge of microelectronics.

6 juin 2021 par bert.harmidomski

@tojaert All good! We all have those days. I'm having one with this %#*@ resistor haha. I have some 5k resistors and some 10k resistors but not 6.34k. Is it possible to use a higher value in this case or should I use 6.34k only?

7 juin 2021 par kylegp

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iPad 6 Wi-Fi (A1893)

Need help identifying a resistor value (iPad 6 LTE/WIFI)

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