Shut down when transitioning to battery, but will restart with battery
After a liquid spill, the computer was working normally again, except that when I unplug the power adapter, the machine shut down. After this automatic shut down, it only starts up again with the ac adapter.
So I bought a new battery.
However, when trying to change the battery, I manually shut down the machine and unplugged the AC. - Then something very strange happened: the machine booted (and ran). -- So the old battery was still ok.
I still changed the battery. Same problem. Runs with AC, but force shut downs when AC is unplugged. -- When shut down manually, can restart and run on battery.
I have done about 10 SMC resets.
Update
Okay, since people seem to be confused, again the question:
Which components are responsible for the transition from AC to battery?
DC in board, logic-board, NVRAM/PRAM? Something else? Someone with engineering background should be able to answer this.
NB: Please spare me answers like "you need to clean" / "Isopropanol works" / "you need to look under the hood" etc. I know all that. This is not helpful.
Is dit een goede vraag?
3 opmerkingen
Many people ask questions here and we don't ask them up front what their skill set is. The way you ask a question is all we have to work off of. Given how you asked you didn't come off as one who could get down and deal with reading a schematic or work with SMT components. If you think your symptoms can lead you (or us) to the exact location and/or the exact component that is your problem, I'm sorry to tell you it just doesn't work that way when someone has spilled something. Sure, often we can ID a problem to a root issue if it is a common failure pattern. This is not one of those cases.
door Dan
OK - Lets try a different way: can you please take pictures of your logic board (both sides and very good detailed pics at that) where you see spill damage. If you don't have any visible damage as you have already cleaned it up then the question is can you read a schematic and trace a circuit and handle soldering of SMT devices? Because thats the next step.
door Dan
@skonrad, there is absolutely no reason to become rude and standoffish. Dan is most certainly trying to assist you with your water damage. I am sure there are plenty off people out here that "Someone with engineering background should be able to answer this.
NB: Please spare me answers like "you need to clean" / "Isopropanol works" / "you need to look under the hood" etc. I know all that. This is not helpful." will enjoy (not) assisting you. Remember that this is a volunteer forum, and if you do not care for the answers you receive, I suggest you take it to an authorized Apple service provider.
door oldturkey03