so I’m currently having problems getting my 2011 mbp 15” to charge, I have just replaced the battery and mag safe connector as these were creating issues. Now when I plug it in the charge light only shows up with a faint green, not even recognising that it’s charging. I have tried turning it on and nothing happens, I have been trying to find answers on other forums but haven’t been able to find the root of the problem, can someone here help me?