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iPhone 6s wont power On

HI everyone,

Hi @refectio SIR

I have an iPhone 6s (no water damage) with Vcc main Short.I find the short capacitor c2330 with Freeze Spray and short gone away.

I try to turn one the phone, DCPS show 0,01 to 0,07 amps, and phone doesn’t turn on.

I tro to change tristar and tigris but the problem is same.

Nand voltages are ok

The strange thing is :  when I connect USB cable, I have 5 volt on PP5V USB RAIL and  also in TIGRIS PMID RAIL.

The capacitor are not connected between them, if I test with multimeter.

I put out the IC and check the voltage under IC ON F5 PAD,  The voltage is ZERO.

And regularlay have 5 volt on VBUS PADS, but when put the ic the voltage came back on TIGRIS PMID rail.

Any suggestion guys?

Thanks and sorry for my bad English.

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Beantwortet! View the answer Ich habe das gleiche Problem

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Gewählte Lösung

The PMID pin should be showing a voltage similar to VBUS so what you are measuring is totally normal. A good trick when trying to understand what a certain Apple-specific IC is doing is to look up similar IC’s that are not “custom-designed” for Apple. The semiconductor industry tends to have pretty normalised nomenclature so theres a good chance you can figure out what PMID means.

For example, a quick search brought me to this datasheet. There are perhaps better fits but this one shows how a PMID is connected internally. As you can see, it is directly connected to VBUS via some diodes.

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That’s why you should see 5V on PMID when the charger is connected.

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@refectio Sir.. Thanks a lot.. You are a Perfection SIR :)

Thanks again.

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AGS wird auf ewig dankbar sein.
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