Hi All,
Someone pointed me to this forum and thread when i to have a water damaged 17" brand new Macbook Pro. Salvaged from a Mac shop.
At first it didnt boot and the corrosion looked pretty bad on the logic board.
After a cleanup i got it to boot when the Keyboard and battery wasnt plugged in, the Magsafe would only go green a certain way around...and the Apple powered up instantly (no keyboard so no power button)
Stripped it, cleaned it again, replaced keyboard and bought another battery (the old original one came up as NOT CHARGING)
Now it boots, works fantastically but for the life of me will not charge any battery....the magsafe doesnt go orange.... the battery test button, when pressed, flashes one green LED a few times then goes off.
I originally thought i got another dead battery so i planned a trip to the apple store (not close by) to test the batteries...but after reading this thread i might be able to test components to at least rule out a dead battery or charge circuit...even a fuse?!
where is it best to start in the test procedure, if you dont mind me asking and not needing to read through all the posted threads - I have test equipment...soldering etc...but no SMD soldering equipment.....but do have a magnifier and tweezers if i need to desolder/replace?! - i hope i dont need to go that far and its a further deep clean?!
Thanks guys in advance!!
The charging controller on the 13" and 15" unibody model is a ISL6258A part. Not certain about 17" but I would guess it is the same. I think I posted a data sheet link earlier in this thread. That will be your starting point. It is a 28 pin QFN package so 7 solder pads each side. It communicates with the SMC to activate charging and then uses a push-pull FET circuit driving an LC network to generate the charging voltage. There is a current sensing resistor (the green device) that feeds back the charging current information to the 6258. Check those FETs to make sure they haven't shorted and check the components around the ISL6258 to make sure none of them are badly corroded.
Also, there are 1 or 2 FET that control the inrush current to the battery. Make sure those are not blown.