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Macbook A2141 820-01700 A

S

sourcensolutionsonline@gm

Member
U7800 LDOs, SLPS2R and AWAKE voltages are exact comparing to the schematics, I noticed that C7020/3 Those are looking washed away but not shorted , should i go ahead and replaced them ? also U7000 Was replaced by a new chip , You think replacing it by another one reballed from a Donor would do better please advice otherwise everything else is looking ok to me .
 
2informaticos

2informaticos

Administrator
Staff member
You should check all secondary voltages, from pages 69-79.
If battery holds charge, PPBUS_G3H should not drop to 0V when USB meter restarts.
Also 3V3_G3H_RTC and PMIC LDOs must be stable.
 
S

sourcensolutionsonline@gm

Member
Just a quick update, I am too sure if it's the battery or I was testing using a 87W charger , I went back to review the area of U7000 And I proceeded to replace R7061 , C7023 ,C7020 as well as U7000 , Now the device behavior while on the USB Amp Meter is staying without battery disconnected, but as soon as I connect the battery USB amp meter is going off and on. But it's not booting at all but the 20V is showing on the amp meter , I was not using the 96W charger Let me know anything please , Thank you.
 
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