Chosen Solution
A costumer of mine brings me a this Macbook Pro 13” late 2013 A1502, and told me that the MBP was working fine, and the the screen shuts-down, and that he could feel the inside fan working. When I get the MBP the first thing I do was connect the MagSafe and the MBP powers up by it self, with 1% of battery charge. Then, I start cheking everything in his MacOS and suddenly the screen went black, but the fan was working. First thing I do: Reset PVRAM and SMC, the MBP continues to do the same thing (Powers Up OK, and while doing anything the screen goes black) Then I remove the back lid and disconnect the battery, and the problem persist. I leave the battery and the MagSafe connected for a while with the MBP off, hoping for the battery to charge a little more, but then, when I try to power it on again, it died, THE MBP DOES NOTHING, the MagSafe Led works fine(even when reseting SMC) I remove the logic board and had a close look, it was a little contaminated so I clean it up. The Macbook Pro stills DEAD, could I have some HELP here PLEASE! Thank you!
Clearly the logic board has a problem. The question is how far do you want to go to fix it? The easiest way is to just replace it. Otherwise, you’ll need to get ahold of the schematics and board views for this logic board and using a DVM trace out the power lines. Even then you’ll likely need to replace a SMT component or chip are you able to get the needed parts and have the needed tools? If it’s the CPU its self it would be time the throw in the towel.
