Hi !
This board come from a A1706, not turning on, that has been lightly liquid damaged, but at the wrong spot. Indeed, oxydation was on right side of U7210 (pin 1 to 5), and also on C7433, nothing too big here. The rest of the board was in good condition.
I replaced U7210 and C7433, then the Mac turned on, Apple logo for few sec, progess bar appeared and then froze for 10 sec. The MacBook boot loop, again and again.
I replaced U7430, I though it could have been also damaged, no change. Then I cleaned ME Region, no change. I replaced BIOS with know working one, no change, I put the original one back.
Last step, I put the board in ultrasonic cleaner, it could have crap under CPU, still same behavior.
What could cause a freeze while loading OS, and what could I check next ?
Thank you for your advises.
This board come from a A1706, not turning on, that has been lightly liquid damaged, but at the wrong spot. Indeed, oxydation was on right side of U7210 (pin 1 to 5), and also on C7433, nothing too big here. The rest of the board was in good condition.
I replaced U7210 and C7433, then the Mac turned on, Apple logo for few sec, progess bar appeared and then froze for 10 sec. The MacBook boot loop, again and again.
I replaced U7430, I though it could have been also damaged, no change. Then I cleaned ME Region, no change. I replaced BIOS with know working one, no change, I put the original one back.
Last step, I put the board in ultrasonic cleaner, it could have crap under CPU, still same behavior.
What could cause a freeze while loading OS, and what could I check next ?
Thank you for your advises.