Chosen Solution
Hello. I have a problem with my MacBook Pro 13” retina late 2012. The system turned off with MagSafe cable plugged (battery was 100%) and I cannot bring it up again. Tried to: SMC and PRAM resetAnother cableDisconnect the battery connector from the logic board and connect him again Nothing works. What confuses me: The light on the MagSafe is always Green. I just left the system for few days, so the battery can discharged a little bit. Plugged in the MagSafe cable and it goes directly to green. Last checked the power cycles from the battery, there was about 2300. Maybe it’s only the battery and this needs a replacement? Thank you! Sebastian Update (01/20/2019) Hi Guys, Thank You for the answers. My plan: Disconnect the battery from logic boardPlug-in MagSafe cable while battery is disconnectedPress power button. When he comes up, it’s a battery issue and I will replace it. When the plan doesnt work, it’s maybe a keyboard or in worst case a logic board issue. I already tried to connect an external keyboard and a display (HDMI) - forgot this in the list from my post, but it doesn’t work either. Thank you and kind regards, Sebastian Update (01/21/2019) Hi Guys, Tried now the following from the last post. Disconnect the battery connector from logic boardTried with plugged in MagSafe cable to turn on — not working The light from MagSafe was Amber during the test. So I tested SMC reset again. The light was going to Green and back to Amber. But I still can’t turn on. I connected the battery again and try it again. Nothing worked. Thank you! Sebastian
Your battery is only rated to 1000 cycles! Yes its time for a new battery MacBook Pro 13" Retina Display Late 2012 Battery Replacement
(Quick disclaimer: I’m not experienced with this, but this is coming from personal experience). First of all, I’d say that you’re definitely going to have to replace your battery. According to an official Apple Support website, the maximum cycles your model MacBook is around 1000, so regardless of whether the battery is the issue or not, I’d recommend swapping it anyways. Here’s the link to the Apple article: https://support.apple.com/en-us/HT201585 In terms of getting your computer to turn on, I would recommend trying these two things, while having your computer plugged in to the MagSafe connector: 1: Try disconnecting the battery from the logic board, and then plugging in the computer and wait. If it powers on, then this might indicate some sort of keyboard issue, or more specifically a power button issue. 2: Try booting up the computer while hooked up to an external display. If that works, it would hint towards some kind of display issue.
At this point you have proven you have two issues the first if your cycle count was correct is needing a new battery. You’ve also proven your systems logic board is gone as well. So you’ll need to think how to proceed. Replacing both will be expensive! MacBook Pro 13" Retina (Late 2012-Early 2013) BatteryMacBook Pro 13" Retina (Late 2012) 2.9 GHz Logic Board This still doesn’t cover the labor if someone where to do it. I think you should visit your local Apple Store to see what they will charge under a flat fee repair.
