Re: Macbook Pro Retina 13” 820-3476-A (A1502) - missing PM_SLP_S4_L

So high chance this board is not repairable due to a dead CPU, oh Apple....

Where would be the best place to inject the voltage? At one of these CPU coils?

Thank you so much for your help, really appreciated.

Re: Macbook Pro Retina 13” 820-3476-A (A1502) - missing PM_SLP_S4_L



Resistance to ground in diode mode:

L7320 0.001
L7310 0.001

Resistance to ground in ohms:

L7320 1.8 ohm
L7310 2 ohm

I guess these are the cpu coils?

Thanks!...

Re: Macbook Pro Retina 13” 820-3476-A (A1502) - missing PM_SLP_S4_L



Oh, so sorry, you're right! I've written down the wrong measurement.

PP3V3_S3 is 0.19V, not 1.79V

Will try to get an oscilloscope and also go through the power sequence as suggested.

Many thanks!...

Hello. I would need some advice please.

My son's MBP suddenly stopped working and is now only getting the green-then-orange light on Magsafe and no fan spin.
He brought the MBP into the house (22 deg C) from a very cold conservatory (-3 deg C) and turned it on straight away. The Mac suddenly died a few minutes later.

I examined the logic board and couldn't find any signs of water damage, corrosion, blown up components etc. Nothing was ever spilt on it, and the logic board looks immaculate.

I have already replaced the logic board with another...

Re: Beginner's guidelines

Very helpful indeed. Many thanks.

Re: New Members - please post your introductions here

Hello everyone, nice to be here. Greetings from the UK.