Chosen Solution
Hi everyone, I have a Macbook Pro 13" Early 2011, problem is “Battery is not charging”. When I connect MagSafe adapter, green led appears and no amber/orange led turns on. I removed the battery and plugged into another Macbook Pro, It seems charging and functioning normally. I have fully charged the battery on working Macbook Pro and plugged back another Macbook Pro. System is starting normally, but “Battery is not charging” label appears on top of screen. MagSafe led is green and battery is discharging. When the battery is completely discharged, there is no way to power on the unit. Only working with charged battery. I did SMC, PRAM reset. No luck. I think it’s a logic board problem. Please help. (I have electronics skills.)
Power.pdf Update (11/18/2015) Battery is charging perfectly on working Macbook Pro.
I measured current sense resistors with multimeter on faulty Macbook Pro. One of them about 2.5ohms, another is about 50ohms. Are these correct?
Update (11/19/2015) R7052 current sense resistor was causing the problem. I’ve measured it as 50 ohms before. I’ve replaced it with 0 ohms. Problem SOLVED!
Yes this is a board problem. Most commenly caused by using non-OEM power adapters or from a power surge. Do you have schematics or tools to troubleshoot the motherboard? What is the 820-#### number on the board?
Are you getting a red or black X on the battery icon? I’d download and run Coconut Battery to get a better idea of what is happening with the battery and let us know your results. http://www.coconut-flavour.com/coconutba…
Hi! I have the same problem. I was able to measure the R7052 sense resistor and it has around 30+ ohms. I wonder about the specifications of that resistor though. I know it should have zero ohms, but that is all I know about it. Can you be so kind and specify the size/name/material/etc for that? Found a big list of options… Or maybe you have a link for it on Digikey or somewhere else? I really don’t want to use a wire. Thanks!
