[SOLVED]820-4924 - Green/orange Light and PPBUS_G3H 1.9V

[pws6074]

This is my second post today!
So, i get green/orange light but my PPBUS_G3H is 1.9V
I don't get short to ground, so any hint ?

Thank you

 

[aprendiz]

U7100:

Voltage on pin 2
Resistance between pin 17-18 and 27-28
Resistance to GND on F7140

 

[pws6074]

Pin 2 = 16V
17-18 = 4.2Ω (normal)
27.28 = 2.5k ( is 20Ω normal )
F7140 = -2.890 M Ω

 

[aprendiz]

Check R7121 and R7122 and traces, could be an open resistor and/or trace.......

 

[pws6074]

R7121 is bad!
I replaced and i get 20Ω - 27 - 28

But Still in 1.9V PPBUS_G3H

 

[larossmann]

Bad U7100, how else would R7121 have blown?

 

[pws6074]

larossmann

I Replaced U7100 and nothing change.
I find out the Q7130 get warm, so i replaced and i get back my PPBUS_G3H.
Right now, my PP5V_S0 i get 4.03V .

​​​​​​​any hint from this point?

 

[pws6074]

I figure out and everything come up, but doesn't work without the charger

 

[dukefawks]

Battery recognized in OSX?

 

[pws6074]

Yes, show the % and everything

 

[dukefawks]

But does it charge the battery? Is there voltage on PPBUS with only battery connected?

 

[pws6074]

Just the battery connect , i get 0V on PPBUS

 

[dukefawks]

Also 0V on battery connector positive terminals? If yes then battery is dead.

 

[pws6074]

Yes, the battery is bad!
Replaced and works!

Thank you, Duke