820-3437B dead CPU?

[Bouba148]

doesn't power ON, No History, Noticed Water damage around SMC

Ppbus_g3h : 8.59V
PP3V42_h3h: 3.440V
broken trace between C5001 and L5001: repaired
PPVRTC_G3H: 3.323V
PP5V_S5: 5.118V
PP5V_S4RS3: 5.119V
PP3V3_S5: 3.324V
PP3V3_S4: 3.325V
PP3V3_SUS: 3.324V
PP3V3_S3: 3.325V
PP5V_S0: 5.118V
PP3V3_S0: 3.321V
PPVCC_S0_CPU: 0.042V
PP1V2_S3: 1.201V
PP1V8_S3: 1.807V
PP1V05_SUS: 1.058V
PP1V5_S0: 1.510V
PP0V6_S0_DDRVTT: 0V

in diode mode PP0V6_S0_DDRVTT: 0.147V

At U7400:
Pin 16: 3.317V
pin17: 0V

At U1970:
R1970: 330KOhms
In diode mode:
MEMVTT_PWR_EN: 0.513V


At Y1905 25Mhz OK but wave signal amplitude at around 1V should be around 3.4V?
At Y1915 24Mhz OK but wave amplitude signal at 0.4V it should be around 3.4V?
At Y5110 NO 12Mhz on Pin1: 1V on pin3: 0V

 

[Bouba148]

Update:
I've forgotten to tell that I've reheated the SMC....whatever......
I wanted to pass the mother boad on the UC, so Iturned the UC ON and waited this one to warm up, I left the room for maybe 10 mins
Then When I came back the fan was spinning at full speed ( no trackpad ) the the board was pulling around 800mA: YES.

I've reassembled everything together and the mba is turning ON properly.
Thanks to GOD!

but before putting everything together I mesured again the voltages at the different Quartz ( Y ), and the amplitudes are still around 1.1V instead of 3.4V, or maybe I wrong please confirm.
I should mesure with another board.

 

[2informaticos]

DDRVTT should appear after CPU VCORE.
Do you get 3V at pin 7/U1950?

 

[Bouba148]

Ola 2Informaticos,
Unfortunately I've re-assambled the mba and working fine so far, now it's charging.
Do you thik that the 3V is marging? Because at least there is a voltage around 3V , if not it won't be able to boot ON.