820-3437 Liquid Spill quarter fan spin

[Aldizi]

https://www.rossmanngroup.com/board...10994-820-3437-fan-spin-for-2-second-and-stop

I looked at this thread and removed u1950 because it was correded i dont have a donor for this exact board.. i tryed powering it on and the fans spun really fast after i removed... What is this which other boards have this chip?

 

[dukefawks]

All retina boards and 2013+ Airs. 3332 has 2 of them.

 

[Aldizi]

q8150 pin six is 3.2 then drops to 1 repeatedly.

 

[Aldizi]

Duke yup thankyou i found one from a 820-3200 board and replaced it im unsure about the orientation thou which pin is the dot ?

 

[dukefawks]

Dot is pin 1.

 

[Aldizi]

Hey Duke I verfied it was placed correctly.... The voltage going up and down is that something to worry about it what else could this be u1950 area is was gross looking but no green corrosion.. apple juice..

 

[Aldizi]

Was waiting for a reply?

 

[dukefawks]

Vcore pulsing?

 

[Aldizi]

Duke guy came in demanding his laptop... I just had to put it back together now.. I felt like this was fixable too... voltage at pin 8 on u1950 was doing 3.42v and then dropping to 1v... and repeating its self quarter fan spin... replaced u7300 but no dice...ITs my fault I took the job and he strictly gave me 3 days... =[[[[

 

[dukefawks]

The voltage on pin 8 should never drop as it comes directly from 3v42 bus. So probably bad trace on pin 8