Hi guys, I am hoping someone can help. I have purchased a very cheap Aand faulty macbook pro A1502 (820-4924-A) to play with and learn a little about repairs.

Now, the laptop is in great condition internal and external, doesn't seem to have been messed with, however, when plugged in and power button is pressed it starts to chime, continuous 3 chimes.

I opened the computer and checked the motherboard. I can see on the inside of the motherboard, around U7700 chip (back-light chip?) there was something that caused a short as the interior of the case is melted (see photo)....

Re: New Members - please post your introductions here

Hi all, I am Alex, I joined because I am hopping to find some help with a broken macbook motherboard.