820-2936 won't charge

[Bohmmen]

This board was damaged by wine.
Everything works great except that it won't charge battery and it won't start with battery disconnected.
I have green light, no orange light.
With magsafe connected voltage is changing between 4.2 and 4.6 at fuse F7040

 

[smiba]

Voltage of PPVBAT_G3H_CONN, PPBUS_G3H with battery plugged in?

See if R7050, R7051, R7052 are within spec

Already tried a known good battery?

 

[Bohmmen]

It works perfect with battery. MagSafe does nothing except light green

 

[smiba]

Alright so that would mean PPVBAT_G3H_CONN, PPBUS_G3H and R7050 is alright.
I don't think it confirms R7051 and R7052 being alright though, could you check those? (Resistance on them)

System is able to show battery percentage, right?

 

[dukefawks]

The usual corroded resistors and or traces to from R7021/22/51/52.

 

[Bohmmen]

resistors measures correct when I check between pin 17,18 and 27,28 at u7000. No liquid in that area

 

[dukefawks]

Where was the corrosion? Voltage on R7020, only with AC.

"correct" is not a value, so measure and specify exact readings.

 

[Bohmmen]

R7020 = 16.5 volt with only AC
There are traces of spill on multiple places but nothing is really corroded. Top half of the board look worse than the other half.

U7000 pin 27,28 is 20,6 ohm
pin 17,18 is 3.5 ohm

 

[dukefawks]

Voltage on DCIN pin of ISL6259? If ok then probably a dead ISL.

 

[Bohmmen]

For some reason I don't have a green light anymore

 

[MDY]

Did you check one wire circuite? Do you have 3V42?