Hello everyone, this is my first post here and I was hoping to get some help with a macbook that I will post the details for below. I have been attempting to teach myself component level board repair over the past month and do own all the main tools required for this type of work. I also feel confident in being able to complete any of the micro soldering or bga work required as I do have a fair amount of experience. I have been using the resources provided by Louis and others online but my knowledge in regards to fault finding / reading and tracking power using a schematic is very limited. Let me explain the problem I have with this specific laptop below, thanks to anyone able to offer their time and assistance. Very grateful for all the help you guys provide.
Make/Model: Mid 2017 Macbook Pro with Touchbar A1707 (EMC 3162)
Motherboard Number: 820-00923
Symptoms/Background: Laptop had water spilt on it, board was removed and everything was cleaned, all of the corrosion was on the side of board where U2800 is, the other parts still have white stickers and appeared clean under microscope. Laptop was reassembled and upon plugging the charger in it does power on and begin to boot, battery is also being charged succesfully. However touchbar, keyboard backlight and power button do not function. The power button does not power on or off the laptop and eventually the OS loads to the point where it requests wifi and after connecting will give a update error with the only option to shut down.
I have learnt that this sequence and error will happen when the touchbar is not functioning via the repair wiki. I do not have a another touch id button / touchbar to try. I took all measurements of voltage and resistance to ground which I will post below. I also checked SMC_ONOFF_L level which is 3.4v and does not change upon pressing the power button.
Thanks to anyone able to offer their knowledge or assistance with this.
Make/Model: Mid 2017 Macbook Pro with Touchbar A1707 (EMC 3162)
Motherboard Number: 820-00923
Symptoms/Background: Laptop had water spilt on it, board was removed and everything was cleaned, all of the corrosion was on the side of board where U2800 is, the other parts still have white stickers and appeared clean under microscope. Laptop was reassembled and upon plugging the charger in it does power on and begin to boot, battery is also being charged succesfully. However touchbar, keyboard backlight and power button do not function. The power button does not power on or off the laptop and eventually the OS loads to the point where it requests wifi and after connecting will give a update error with the only option to shut down.
I have learnt that this sequence and error will happen when the touchbar is not functioning via the repair wiki. I do not have a another touch id button / touchbar to try. I took all measurements of voltage and resistance to ground which I will post below. I also checked SMC_ONOFF_L level which is 3.4v and does not change upon pressing the power button.
Thanks to anyone able to offer their knowledge or assistance with this.
