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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone, iPad, iPod Hardware Repair

iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

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Old 05-06-2019, 18:12   #1 (permalink)
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iPhone X PP GPU short


ok. I have seen this twice now. That last one was a bad A11

I have a iphone X with a PP GPU short All the caps on that rail are low ohms.

Is this a signature fail?
Last time I started pulling caps one at a time until there were none left. Then pulled PMIC then the A11. The short went away with the A11.
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Old 05-07-2019, 15:35   #2 (permalink)
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Anyone?


Is there a highly active forum for micro solder technicians.. ?
I find some info here but it is sparse.
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Old 05-07-2019, 23:01   #3 (permalink)
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Using thermal imaging "I figured out a more precise method for my Flir" using a iPad as the display and using a lens distance of less than 3".

I am 100 % positive this is a A11 chip as well.
How the hell do you fix this?

To see a video of the FLIR as the board powers on visit my youtube channel.
kcmicrotronix The name of the video is "iPhone X PP GPU short"
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Old 05-08-2019, 16:37   #4 (permalink)
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I am officially pulling the plug on the repair and calling it a defective A11.
no reparable.
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Old 11-26-2021, 04:16   #5 (permalink)
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Check this video, i hope it helps.

https://www.youtube.com/watch?v=RBA7sYub8mI
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Old 11-26-2021, 04:17   #6 (permalink)
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Check this video, i hope it helps.

https://www.youtube.com/watch?v=RBA7sYub8mI
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Old 11-26-2021, 04:17   #7 (permalink)
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Check this video, i hope it helps.

https://www.youtube.com/watch?v=RBA7sYub8mI
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Old 11-26-2021, 04:18   #8 (permalink)
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check this video, i hope it helps .
https://www.youtube.com/watch?v=RBA7sYub8mI
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Old 11-26-2021, 04:18   #9 (permalink)
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check this video, i hope it helps .
https://www.youtube.com/watch?v=RBA7sYub8mI
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Old 11-26-2021, 04:19   #10 (permalink)
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check this video, i hope it helps .
https://www.youtube.com/watch?v=RBA7sYub8mI
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Old 11-29-2021, 14:18   #11 (permalink)
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Hello,

PP_GPU is a very low value in resistance/diode mode, are you sure you're facing a short on that line?
I have an iphone X that is booting normaly, the value for this line is 4.5 ohm.
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