Chosen Solution
There was a water spillage on my Mac. I used isopropyl to clean and revive. I am currently writing this question from Mac I revived by running OSX from USB flash drive. SSD removed. Issues that still persist : #1. Power button does not work at all —> either to turn On or Off. #2. I can literally restart the computer but cannot turn-off and turn back on after ‘Shutdown’. Computer is non-responsive if I shut it off. I have to go through the entire process of disconnecting battery, connecting it back and connect back power cord. Revived Mac using these steps : Removed out SSD completely (I am now using a flash drive to run El Capitan.) Disconnected & re-connected battery. Connected power-cord . Voila! Since power button is not responsive, SMC reset is out of question following the steps published. Why is the computer Restarting without any problems , but when I shut down , I have to disconnect/re-connect the battery? Does seem like this step is wiping out some memory that is hampering the step of boot-up. Battery is charging fine after I connect it back and power cord is connected. Why would power button not respond ? Would new SSD help? Any chance these 2 issues of SSD and power button be related ? I ordered a new SSD to see if it helps. But I doubt. Any explanation and ideas on this would be highly appreciated . Thanks!! TG PRO
TG Pro Result (Logic board selected)
Coconut (100% battery)
Coconut (40% battery)
I would try running the onboard diagnostics to see if anything pops within it. Restart your system and press the D key. Apple messed up the newer versions of the systems firmware so it might not work but it’s worth a try. Mac startup key combinations You do need to put the SSD back in and plug in the battery as you don’t want to add a bunch of distractions for diagnostics to figure out. If that fails to work you might want to give this app a try TG Pro you’ll want the full version to get the diagnostics function. Its not a full diagnostics but it might be enough to figure out where you need to focus on. Otherwise you’ll need to play wack-a-mole replacing part by part (battery, keyboard, or logic board).
