MacBook Pro 13" 2015 A1502 no PPBUS_G3H green orange light but no fan

Question

MacBook Pro (13 Zoll, Anfang 2015, Retina Display)

Das März 2015 Update von Apples 13" MacBook Pro Retina Display, Modell A1502, bietet fifth-generation Intel Core i5 und i7 Prozessoren der 5. Generation und führt den Force Touch Trackpad ein.

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kamilerdmanski @kamilerdmanski

Rep: 1

1

Veröffentlicht: 17. Nov 2017

Einstellungen

MacBook Pro 13" 2015 A1502 no PPBUS_G3H green orange light but no fan

I have no fan / no power on my MacBook Pro. My MagSafe charger LED is either Orange or Green, but the system doesn't power up.

I don't have PPBUS_G3H. Does someone have an idea why?

U7100:

Pin 2 = 16V
17-18 = 4.2Ω (normal)
27.28 = 20Ω (normal )

F7140 = resistance to ground 1,4Ω ??

UPDATE:

PPBUS_S5_HS_COMPUTING is shorted to ground. Pin 2 of C7316 getting hot.

The HS Line is shorted to ground. I Cent do anything beacuase of The hole in Board.

Beantwortet! Antwort anzeigen Ich habe das gleiche Problem

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Did you check the fuse link? {F7040}

17. Nov 2017 von Dan

You mean F7140?? How can i test it? What specification has it?

19. Nov 2017 von kamilerdmanski

I think he is referring to the PPBUS_G3H fuse. Measure both sides of the fuse, one side is for the system and the other side is more closer for the DC-in jack.

19. Nov 2017 von Ben

Thanks Ben for adding the clarity!

19. Nov 2017 von Dan

same problem

not power a1502

7. Sep 2019 von Isolutions

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Gewählte Lösung

Reece @reecee

Rep: 34,8 Tsd.

eFix Ltd (UK)

8

52

62

Veröffentlicht: 19. Nov 2017

Einstellungen

There is a short to ground on PPBUS_G3H, feel U7100 to see if it is getting hot. If it is not, remove F7140 and see which side the short to ground is located, where PPBUS is created (charging chip side) or system side (anything powered off of this line). Keep in mind this voltage goes to at least one 4 way low ohm resistor, so something from this could be shorting PPBUS_G3H to ground.

If you don't notice any visible damage, try injecting a small amount of voltage on this line and see what gets hot.

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Thx for the help! The U7100 is not getting hot. I removed F7140 and i recognize that pin 2 (system side) is shorted to ground. Where can i look next?

20. Nov 2017 von kamilerdmanski

Get a board view file for your board, and check everything on this side of the fuse, to find out what is causing the issue. Unfortunately there is no 'one solution solves all'; you just have to figure it out for yourself. Inject a small amount of voltage if you have to, to see what is shorting to ground

20. Nov 2017 von Reece

I removed the R5400 and the system side is no more shorted to ground. Now i have to find new R5400...

UPDATE:

Is it this one: VISHAY WSK06123L000FEA METALLBAND-WIDERSTAND, R003, 1%, 0612

??

20. Nov 2017 von kamilerdmanski

R5400 is a 4 way resistor with no path to ground; something on one of the 4 points is shorted to ground, and then shorting PPBUS through this 4 way resistor (since it is low ohm resistance)

Basically PPBUS will be shorted when you replace the resistor, so you need to find out what is shorting

21. Nov 2017 von Reece

So.... The pin 1 of R5400 is still shorted to ground (PPBUS_S5_HS_COMPUTING). Then i removed all resistors (R7202, Q7320, Q7310, Q7430 and Q7630) and PPBUS_S5_HS_COMPUTING was still shorted to ground. It means that one of the capacitors is shorted? I removed some (C7317, C7318, C7619, C7372, C7323, C7375, C7373, C7374, C7319, C7329, C7314, C7313, C7324) but still PPBUS_S5_HS_COMPUTING is shorted to ground.

Then i used a freeze spray for boards and put DC to the board. I recognize that the PIN 2 (GND) of C7316) was melting firstly. Where can i look next?

22. Nov 2017 von kamilerdmanski

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You mean F7140?? How can i test it? What specification has it? — kamilerdmanski
I think he is referring to the PPBUS_G3H fuse. Measure both sides of the fuse, one side is for the system and the other side is more closer for the DC-in jack. — Ben
Thx for the help! The U7100 is not getting hot. I removed F7140 and i recognize that pin 2 (system side) is shorted to ground. Where can i look next? — kamilerdmanski
Get a board view file for your board, and check everything on this side of the fuse, to find out what is causing the issue. Unfortunately there is no 'one solution solves all'; you just have to figure it out for yourself. Inject a small amount of voltage if you have to, to see what is shorting to ground — Reece
I removed the R5400 and the system side is no more shorted to ground. Now i have to find new R5400...

UPDATE:

Is it this one: VISHAY WSK06123L000FEA METALLBAND-WIDERSTAND, R003, 1%, 0612

?? — kamilerdmanski
R5400 is a 4 way resistor with no path to ground; something on one of the 4 points is shorted to ground, and then shorting PPBUS through this 4 way resistor (since it is low ohm resistance)

Basically PPBUS will be shorted when you replace the resistor, so you need to find out what is shorting — Reece
So.... The pin 1 of R5400 is still shorted to ground (PPBUS_S5_HS_COMPUTING). Then i removed all resistors (R7202, Q7320, Q7310, Q7430 and Q7630) and PPBUS_S5_HS_COMPUTING was still shorted to ground. It means that one of the capacitors is shorted? I removed some (C7317, C7318, C7619, C7372, C7323, C7375, C7373, C7374, C7319, C7329, C7314, C7313, C7324) but still PPBUS_S5_HS_COMPUTING is shorted to ground.

Then i used a freeze spray for boards and put DC to the board. I recognize that the PIN 2 (GND) of C7316) was melting firstly. Where can i look next? — kamilerdmanski

TCRS Circuit @tcrs_circuit Rep: 3,5 Tsd. TCRS Circuit 6 7 2 · Answer 1 · 2017-11-21T15:53:05-07:00

TCRS Circuit @tcrs_circuit

Rep: 3,5 Tsd.

TCRS Circuit

6

7

2

Veröffentlicht: 21. Nov 2017

Einstellungen

If U7100 is getting hot replace it. Fairly common failure

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This is Not The Solution for my Problem. After removing F7140 and R5400, which was shorted to ground, i get 12,6V on PIN 1 of F7140. Now i am Waiting for new R5400, Then i will give you my results :)

21. Nov 2017 von kamilerdmanski

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score 1 · Answer 2 · 2017-11-17T07:06:47-07:00

mayer @mayer

Rep: 685,3 Tsd.

MacHale Enterprises

3,4 Tsd.

1,1 Tsd.

2,6 Tsd.

Veröffentlicht: 17. Nov 2017

Einstellungen

See the pin out of the mag-safe in the diagram on the right hand side of this wiki: https://en.wikipedia.org/wiki/MagSafe

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Isolutions @isolutions Rep: 1 2 · Answer 3 · 2019-09-08T21:52:41-07:00

Isolutions @isolutions

Rep: 1

2

Veröffentlicht: 8. Sep 2019

Einstellungen

I have the same problem, Only the light sells turns on and does not turn on, it falls short in this part but I cannot locate it in the schematic manual. Can someone help me which part is the image?

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MacBook Pro (13 Zoll, Anfang 2015, Retina Display)

MacBook Pro 13" 2015 A1502 no PPBUS_G3H green orange light but no fan

Update (11/22/2017)

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