Chosen Solution
Hey, Suddenly (about 8 weeks ago) my Macbook stopped working when the AC-Adapter was not plugged in. When it was, every worked fine, the battery would even charge to 100 %, vbut as soon as I unplugged it, the power would go completely off. I have since tried the following:
- purchasing a new charger cable (offbrand)
- install a new OEM battery (bought it from iFixit)
- replaced the I/O board. Now my Mac says “replace now” in the battery status dialogue, and is still only drawing power from the charger, not from the battery. Same effect if I switch to the old battery, so the initial problem is still not solved. Of course I have reset the SMC (multuple times both with the device powered and not powered) and the PRAM. Any help is greatly appreciated!
Recap: -No traces of liquid damage. -No apparent physical damage. -Tried with original battery and 2 new batteries. -Battery is charging but laptop is not working from the battery, just from charger. -SMC reset did not fix it. In my personal opinion, I think you exhausted all the trouble shooting steps you could perform at a DIY level and did a good job so far. Broadly put, Iam guessing you have an issue with your power and charging circuit. Specifically, the laptop is not switching from charger to battery when the charger is disconnected. This is usually a staightforward repair for someone with Mac board level repair experience. It is not in my opinion a DIY repair.
Has the machine had any accident? To get a better idea of what’s going on, download and run Coconut battery and let us know you results: http://www.coconut-flavour.com
