Battery is not charging

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MacBook Pro（13 英寸，配备 Retina 显示屏2015 年初期）

2015年3月更新的 13 英寸 MacBook Pro 配备 Retina 显示屏，型号为A1502，采用第五代英特尔酷睿 i5 和 i7 处理器，并配备 Force Touch触控板。

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Tomas @honzo

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发帖于: 2019年2月27日

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Battery is not charging

Dear experts

I recently received a MacBook Pro 2015 13” Early for motherboard repair. This board number is 820-4924.

Owner connected system to low cost Chinese charger and MacBook turned off and does not want turn on.

I found, than Q7130 is defective, so i replaced Q7130 and U7100. System turns on and work perfectly, But:

When system is turned off and connect charger, the system does not boot. I have to press the power button to turn on the computer
When system is turned on and connect MagSafe charger, computer does not want charge. In manager it shows me than charger is connected but does not charge.

So i replaced Q7155, D7105, R7105 and U7100 one more time but system does not want charge.

Any idea where can be problem?

Thanks

@refectio

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@arbaman @reecee

由 Minho 完成的 2019年2月27日

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arbaman @arbaman

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发帖于: 2019年2月28日

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It sounds like a Smc issue, already checked PP3V42_G3H_SMBUS_SMC_5 ? As a rule of thumb I prefer to replace the ISL and the two mosfets at once or one runs the risk the faulty part burns the good one in a never ending loop.

@refectio

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do you think U7100, Q7130, Q7180 one more time?

由 Tomas 完成的 2019年2月28日

@honzo I doubt that it would solve your problem, symptoms seem to be pointing to an SMC related issue in my opinion.

由 arbaman 完成的 2019年2月28日

can be damaged smc when connect fake china charger?

由 Tomas 完成的 2019年2月28日

@honzo SMC itself is quite a robust IC that doesn't get damaged very easily by a bad charger also because there are other components in between, but it might happen. However resistors used by the SMC for current sensing or along battery charging circuitry or even rails may be damaged more easily. Continuity testing and resistors probing are often needed.

由 arbaman 完成的 2019年2月28日

@arbaman after replaced SMC macbook charge, but when board cooled down charging stop.

由 Tomas 完成的 2019年3月1日

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@honzo I doubt that it would solve your problem, symptoms seem to be pointing to an SMC related issue in my opinion. — arbaman
@honzo SMC itself is quite a robust IC that doesn't get damaged very easily by a bad charger also because there are other components in between, but it might happen. However resistors used by the SMC for current sensing or along battery charging circuitry or even rails may be damaged more easily. Continuity testing and resistors probing are often needed. — arbaman
@arbaman after replaced SMC macbook charge, but when board cooled down charging stop. — Tomas

MacBook Pro（13 英寸，配备 Retina 显示屏2015 年初期）

Battery is not charging

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