Hermann Neupert
Member
Today I receive a Macbook A1398, board is 820-00138. Problem start with a water spill over the keyboard.
Customer clean the board before bringing to us. Macbook turns on, you get the apple sound a few seconds later apple logo shows for a second and Macbook turns off and starts to bootloop, always showing the apple for a second. Booting presing commands for PRAM does nothing, if you start with a pendrive and alt key, MAcbook shows the drives, if you select the internal ssd the Apple shows longer, a quarter of the loading bar, then bootloop starts.If pendrive is selected loading bar goes almost 3 quarters, the bootloop.
In the inside board looks really nice, almost no dust, but I found signs of water in two places, in Q3080 and the capacitor next to it, I clean with flux and hot air, maybe I need to change 3080.
he other place is in Q6060, and C3532 both with just a little oxidation, not shorted and fans work normal.
Should I continue looking for water damage, or is most likely a EFI/BIOS problem?
Customer clean the board before bringing to us. Macbook turns on, you get the apple sound a few seconds later apple logo shows for a second and Macbook turns off and starts to bootloop, always showing the apple for a second. Booting presing commands for PRAM does nothing, if you start with a pendrive and alt key, MAcbook shows the drives, if you select the internal ssd the Apple shows longer, a quarter of the loading bar, then bootloop starts.If pendrive is selected loading bar goes almost 3 quarters, the bootloop.
In the inside board looks really nice, almost no dust, but I found signs of water in two places, in Q3080 and the capacitor next to it, I clean with flux and hot air, maybe I need to change 3080.
he other place is in Q6060, and C3532 both with just a little oxidation, not shorted and fans work normal.
Should I continue looking for water damage, or is most likely a EFI/BIOS problem?