[SOLVED]Macbook Air 13 (820-00165) shitty logic board again Why WHY

[Ciki]

Now board was water damaged around U3220 ,cleaned ,replaced now when connect board with charger green light and orange but no spin PPBUS_G3H 8.5 V,PPVRTC 3.3V ,PP5V_S5 5V missing PP5V_S4RS3 ,now when I connect battery and charger macbook chime and start (working) once when started I can disconnect battery and its still will work ,so to turn on needs battery connected ?????

 

[JohnB8812]

Lol I literally had the same problem last week! If it recognizes, charges, and runs off of the battery, I'd leave it.

 

[Ciki]

I only notice without battery that C7126 CHGR_BGATE voltage is fluctuating from 8.5V and 1.2V ,with battery is stable 8.5V

 

[aprendiz]

Resistance betwenn pins 17-18 and 27-28 from isl6259?? Voltage on pin 2?? Only charger...

 

[Ciki]

Resistance between 27-28 is 21omh and 17-18 is 4omh and voltage on pin 2 is 19.6v using 85w magsafe

 

[rvanpruissen]

Did you check PP3V42_G3H in both cases? Maybe something wrong with D7005 and/or resistors close by.

 

[Ciki]

PP3V42_G3H is steady 3.4v

 

[dukefawks]

Why mess with it further if it works fine if there is a battery connected? Just leave it.

 

[Ciki]

I know but when battery get drained cant start

 

[Ciki]

Fixed replace the whole palmrest ,so maybe keyboard or trackpad