[SOLVED]820-00165 no fan spin but responds to SMC reset

[nik1981]

MacBook Air A1466 820-00165 liquid spill through the rear vent. Was powering up but no keyboard. Fuzz around SMC and trackpad connector ribbon but nothing major. Ultrasonic cleaned and replaced the ribbon. Now I get a Magsafe light and no fan spin, chime or display.

It does respond to SMC reset though by switching to green and back to orange.

PPBUS_S5 = 8.6v
PP5V_S5 = 5v
PP3v3_S5 = 3.3v
SMC_PM_G2_EN = 3.4v
RTC_G3H = 3.3v
PM_SLP_S4_L = 0v then 2.2v every 1-2 seconds < not sure whats going on here
PPBUS_G3H = 8.6v

I'm not sure where to go from here. Any help would be really appreciated.

 

[aprendiz]

The same, check for corrosion on U1900, U1950, U6100, J6100, resistor and traces around U6100, and ofcourse SMC........

 

[nik1981]

Thanks for that. I went back and U1900, U6100 & U1950 connections didn't look great. Removed that and replaced the solder on all of them. J6100 looks perfect. Also fixed a broken GND TP behind U6100 (probably didn't need to) Anyway, it all fired up and works perfectly now. Thank you for your help

 

[nik1981]

Now on to the next 00165 board