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The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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MacBook a1502 only sound that turns on and does not turn the fan heats

Hello friends, I just received an A1502, you only hear the classic sound of turning on macbook, but the fan does not turn and nothing appears on the screen, heats cpu.

could you help me how to start the diagnosis,

thanks

Angel

Update (10/21/2019)

hi Friends.

to comment that it detects short in mosfet pashe1, replacement and ppbus_g3h : 12 volt

now I don't have pp5v_s5, and read that ppv5 voltage is more complicated to detect

some help now replace smc reset and u7501

thanks

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1 Answer

sometimes you cannot hear the fan running because it is so quiet, try putting your hand at the back of the mac to see if you feel any heat coming out. Does the keyboard light up after it is on for about 40 seconds?

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I'm watching it doesn't turn fan and heats cpu[br]

keyboard single light uppercase key

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