Chosen Solution
Ok I’ve got this 2012 MacBook Pro that somewhat turns on, fan runs heavy, battery seems to be charging (charger leds and battery leds work), front led lights up but laptop doesn’t chimes and screen keeps black. Screen has no cracks or scratches, laptop wasn’t water damaged or impact damaged. I cleaned everything with isopropyl anyway: all contacts, whole logic board (both sides), replaced thermal paste, etc. Also tried 3 different sets of 2x2gb ram and 2 different HDDs too. Disconnected battery and tried turning it on with charger only (60w charger). Also considered replacing battery but if it doesn’t work with charger only (battery disconnected) might rule it out? :-) Oh and it doesn’t boot from USB, doesn’t boot on safe mode or verbose mode. But took a DVD in and seemed to run it but now won’t eject it (it was a movie DVD instead of OS X DVD unfortunately) To be honest I did it all very quickly and plant to have another look tomorrow after work but has anyone got any ideas you might suggest me to try? I feel this laptop is salvageable but I’m feeling a bit lost here :P Any suggestion would be very appreciated :-) Thanks!
In my experience on newer Macs, they still run when the battery is gone and plugged into power, so I don’t think it is your battery necessarily. The lack of a chime is concerning to me. It could be that the volume is down, but it could also mean that it is failing the POST. Have you tried an SMC reset and an NVRAM reset? Technically disconnecting the battery and power will reset the NVRAM, but worth a shot right? To reset SMC hold down Shift + Control + Option and hit the power button, while plugged in. You should see the charger LED change from Red to Green and back or Green to Red and back, depending on if it is fully charged or not. If that doesn’t work, hit the power button and immediately hold down CMD + Option + P + R and wait until you hear the chime. If you don’t hear it after a while, it didn’t work.
I feel ya, it seems since Apple products from 2011 are now considered vintage we Apple mid 13 inch owners are next. I have many more macbooks, but this is special to me, and im sitll waiting for response from some on here for he instant white screen and loud fan issue. and strange other strange beaviors. I should’ve suck first party accessories this whole time. Hoepfully some can help me with the white screen issue I am expeirncing. defintely pre chime pre kernal
Well I had to replace the logic board to make it work and that did the trick. Still don’t know if it could be fixed instead but that was the only thing I could think of after everything I tried - and I did tried a lot of things before spending in another logic board…
