Macbook Air A3114 5V 0.0A after water damage

[s_henya]

Hi Mac experts :-)

Im usually not getting too many Mac logic boards repairs, (mostly PC laptops)
This Mac isn't powering on not boosting to 20v, stays at 5v with 0.0Amps.

Took out the board and it suffered some water damage, see attached pics.
All cleaned with IPA but due to long time with corrosion something already got shorted...

any advice on the below:?

1. Looking for relatively safe location for voltage injection as all of the caps around that area has 0.0ohms resistance.

I tried injecting 0.5v on one of the caps but got only 0.17A and couldn't detect any overheating with my thermal camera.

anyone can note what is the area is responsible for?

[s_henya]

Updates:
I suspect UC710 SN621371 (Power supply management chip)
I injected 0.5V on CC715 and only this chip showed signs of slight overheating.

any more ideas before i try to take it out?

[mon2]

Flux and lift up one leg of LC710. Then confirm which side of the LC710 you measure the short condition.

[s_henya]

Flux and lift up one leg of LC710. Then confirm which side of the LC710 you measure the short condition.

Dear Mon2,

thanks for you constant contribution and help!

i took out the coil, pads are shorted 0ohms on both sides :-(

i couldn't find a significant overheating element... im trying to keep the voltage injection to minimum <0.8v
but i may have to go higher, but im not sure this rail it meant to take any more than that.
clearly with pc laptop motherboards im feeling much more comfortable :-)

do you think its worth to go with higher voltage?