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Old 04-30-2019, 07:46 AM   #1
alihomee
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Default macbook pro retina 15inch a1398 power issue

here is something strange...it can start with power supply and runs fine and can charge also but with 85waat magasafe it could not turn on and green led on and again off on magasafe i tried with other adapter also same any ideas from where i should start ......i changed battery charging ic also same result no sings of water damage.....mobo code is 820-3787-a
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Old 04-30-2019, 07:57 AM   #2
piernov
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Default Re: macbook pro retina 15inch a1398 power issue

Maybe an issue with R7012, around Q7010 circuit (shorted MOSFET, bad resistors or bad zener diode), or around Q7180 (shorted MOSFET or bad gate resistors).
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Old 04-30-2019, 03:10 PM   #3
monitron
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Default Re: macbook pro retina 15inch a1398 power issue

If it starts on adapter, does the battery icon appear? You should first find out if it is a battery power problem or a battery communication problem.
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Old 05-03-2019, 12:29 AM   #4
alihomee
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Default Re: macbook pro retina 15inch a1398 power issue

it does not start with adapter it only turns on with power supply
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Old 05-03-2019, 12:30 AM   #5
alihomee
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Default Re: macbook pro retina 15inch a1398 power issue

can i get board view or schematic
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Old 05-03-2019, 05:07 AM   #6
peste
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Default Re: macbook pro retina 15inch a1398 power issue

try ...

https://www.badcaps.net/forum/showthread.php?t=62268
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Old 05-19-2019, 06:33 AM   #7
alihomee
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Default Re: macbook pro retina 15inch a1398 power issue

i checked around as mention above but circut is fine
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