Chosen Solution
Hello, I just replaced the battery on my Mac. Mac model a1398 with battery model a1417 because I thought that was the issue as it was pretty worn out. But the Mac keeps dying. On the far left the copper point with a screw looks heat damage. Could possibly be water damage from the previous owner though I’ve had it for over 2 years. When powered on sometimes it works, every hour or so for 15 minutes then crashes and won’t turn back on. When battery is disconnected and plugged back in to restart, the fans run but there is no display. Could it be compromised by viruses? Or parts damage? Do I have to remove the logic board or should I try a recovery mode?
Lets see if we can gets some diagnostic clarity and rule out some of the simpler issues. Do you know if it had gotten wet or dropped?When the MagSafe is connected what is the color of the cords LED? Green or Orange.Inspect your MagSafe adapter & the connector surfaces, refer to this Apple T/N: Apple Portables: Troubleshooting MagSafe adapters Also make sure it’s the correct adapter for your system. If you see something replace the adapter. Do make sure you get a REAL Apple unit more fakes are showing up online. These fakes can damage your system,Download this free app: CoconutBattery this gem of an app will give you a good view of your batteries health and the status of the charging logic. Post a screen shot of the main screen for us to see as well. Take some good images of what you believe is damage on the logic board and post them so we can see.
This is becoming a common problem now. It is most likely the GPU Buck converter U8900 on the motherboard and is an issues with the tin solder used by the manufacturer separating from the chip due to heat stress over time. This is most likely a logic board issues and can be resolved if you have a very nice soldering iron and microscope. Take a look at this video for how to solve it. https://www.youtube.com/watch?v=BYLuJBNL… Hope this helps! Best of luck
