Chosen Solution
Hi, I know it’s been asked many times, I’ve tried all kinds of methods in restarting, no help from that. I know its an old machine but I just bought it and the battery was working fine and it stopped after taking the battery out and putting back in, The light on the battery turns on I checked the cells they work and overall voltage at the end of the wires is 12v :) Now I’m wondering about the resistors on the motherboard or the battery logic board that are related to the battery charging stuff. The Mac sees the battery, but says its not charging. I only fixing this as a hobby since I’m kinda into electronics Sorry if my english is bad, as it’s not my mother tongue :-) Thanks
I would start things off here making sure the MagSafe connectors are in good shape. Using a slightly damp cotton swab with isopropyl alcohol clean the contact surfaces. With the MagSafe charger unplugged press slightly on the contact pins to see if they depress. Also note if the contacts are melted or off center. You may need to replace the MagSafe board. Follow this IFIXIT guide: MacBook Core 2 Duo MagSafe Board Replacement. Given the systems age, I would also suspect the PRAM battery is bad here. When you took the main battery out it lost all of its settings in PRAM as it was the main battery which was still supplying the needed power. Here’s the IFIXIT guide you’ll need to follow: MacBook Core 2 Duo PRAM Battery (Santa Rosa/Penryn) Replacement.
