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iPhone 8 - 3 SHORTS - M2800

November 23, 2019

iPhone 8 - 820-0072 - Dead

 



Prior Tech Work.

Looking for short & injecting like a habit.


Removed:
Q3350
C5130_K
C5695
C3390

 

 

 

No fix! :(
 



So I take a look and 10 minutes find 3 shorted components and remove ONLY 3 shorted components.

 

M2800:

 

 

 

 

 


1) One INTERNALLY shorted component was M2800 - P2,3,4 - Repaired ;) IT WAS SPLIT WITH SOLDER BALLS POPPING OUT THE SIDE

 

 

 

 

 

 

 

 

 

 

 

SN2501-A1:

2) The underfilled Tigris was also shorted at 3a limit and showed with Rosin. Ohms reading proved location.

 

 Removed Tigris and still had 3a/0.7v VDD short but NO heat.

 

C303_E:

 

 


3) The shorted component was C303_E found by my method and soaked up 6amps.

Now yes TIGRIS was shorted also but not by C303_E, the chips pads were tested and were short.

Replaced Tigris, Repair, Reball and install M2800 - Device now boots at healthy current.

 

All M2800 internal circuits operate withing iOs and are all normal.

 

Usual iOs application/hardware tests proved sweet.

Install new Q3350, missing caps and good to go.

 

oops! forgot this bit ....

 

 

 

 

 

Regards Dee

 

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