A1278 820-2936-B NOT CHARGING

[Jeffotskie26]

hello got this model green light only cant on with charger alone
but when i put new battery can on it shows battery is charging but only green light.
ppbus 5v only battery not connected. with battery 11v
u7000
pin 17-18/27-28 ohms is normal
u7000
1 - 0v
2- 16v
3 - 4v
9 - 0v
12 - 3.4v
13 - 3.4v
14 - 3.3v
15 - 0v
17 - looping 4.2v-4.5v
19 - 5.v
20 - 5.v
25 - looping 4.2v-4.5v
27 - 16v
j7950 voltage also normal.

 

[2informaticos]

Check R7C7025 first.
Be sure to have good solders and traces around U7000.
Post voltage of its pin 6.

 

[Jeffotskie26]

pin 6 3.4v
r/c7025 is good

 

[2informaticos]

Check the components and traces from pins 5/7/8 of U7000.
Did you try another ISL6259?