Schematics for the tristar area - Anyone can help?

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维修iPad Pro 10.5寸

发布于2017年6月，iPad Pro 10.5寸替代发布于2016年的iPad Pro 9.7寸。

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Adrian @papaulm

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adrian büsselmann

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发帖于: 2021年4月25日

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Schematics for the tristar area - Anyone can help?

I've got this iPad with a charging problem and I think it isn't the tristar itself. According to the “Diode Mode Mesurements”. from the wiki page, I figured out that there is only an open line from the charging port. Or has this line something to do with the battery itself? Without any schematics or boardview I can’t get any further. Before changing the tristar itself I want to be shure that nothing else is faulty. Any help will be highly appreciated!

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Swap your probes around and measure. “Black probe on ground”

由 Chris Stables 完成的 2021年4月25日

@imicrosoldering Thank you for your reply! What readings should I get there? Or should I mesure the volts when plugged in?

由 Adrian 完成的 2021年4月26日

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daniel @tech_ni

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here’s a boardview of the components that pad is connected too.

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@tech_ni thank you for your help, so it might be the tristar at all. Will order a new one and see what happens then ...

由 Adrian 完成的 2021年4月26日

@tech_ni ... so I did change the tristar, still no charging or more than 0,05 A taking. Is there anything that might help me figuring out what is wrong with this iPad? Do you eventually know where to inject voltage to find the fault with my thermal camera?

由 Adrian 完成的 2021年5月3日

Have you checked for loose coils, only thing I could recommend is an icc pro tristar tester or a jc tester.

由 daniel 完成的 2021年5月3日

@tech_ni Did check all the coils as they where often loose I found out. A tester is a good idea, unfortunatly at the moment too expensive for me to buy one. I was hoping to find the problem manually ;-)

由 Adrian 完成的 2021年5月12日

Zxw isn’t very good at showing what the rails are in iPads and newer phones unfortunately.

由 daniel 完成的 2021年5月15日

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Swap your probes around and measure. “Black probe on ground” — Chris Stables
@imicrosoldering Thank you for your reply! What readings should I get there? Or should I mesure the volts when plugged in? — Adrian
@tech_ni thank you for your help, so it might be the tristar at all. Will order a new one and see what happens then ... — Adrian
@tech_ni ... so I did change the tristar, still no charging or more than 0,05 A taking. Is there anything that might help me figuring out what is wrong with this iPad? Do you eventually know where to inject voltage to find the fault with my thermal camera? — Adrian
Have you checked for loose coils, only thing I could recommend is an icc pro tristar tester or a jc tester. — daniel
@tech_ni Did check all the coils as they where often loose I found out. A tester is a good idea, unfortunatly at the moment too expensive for me to buy one. I was hoping to find the problem manually ;-) — Adrian
Zxw isn’t very good at showing what the rails are in iPads and newer phones unfortunately. — daniel

维修iPad Pro 10.5寸

Schematics for the tristar area - Anyone can help?

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