Will not turn on at all, charger shows a green light.

Okay so it might be an issue with the MagSafe connector. The computer doesn’t turn on at all when battery is disconnected. The MagSafe connector is now orange when I connect it.

I did notice my MagSafe connector used to get super hot before my computer died. The 2nd and 4th pin on the receiving end on my computer are completely burnt. Doesn’t this hint at a problem with the MagSafe connector and the computer Charging port? I don’t have a way to measure the voltage but a new MagSafe board is like $30 here and I’m more than willing to take the shot to see if it’ll work. Is it a bad idea to do this?

I’m really praying this isn’t a logic board issue because having to repair the whole thing is too expensive considering it’s a fairly old computer.

Also, could you tell me what the volts should read out to? What’s normal and what’s abnormal?

The 2nd and 4th pins are the pins which carry the main power through the MagSafe board to the logic board. If they are burnt it probably means there was a short or a surge that cause more voltage than normal to be passed through the pins. I would definitely recommend trying to replace the MagSafe board if you can do so cheaply! For your model it should be passing 16.5 V DC through the MagSafe board. If it's significantly more or less than this there is a problem.

Here's a useful Wikipedia page which explains the voltages and function of the pins and their arrangement. https://en.wikipedia.org/wiki/MagSafe_(M...)

Okay, so I went to Apple Genius Bar. The guy said they won’t fix it because I replaced the battery myself 3ish months ago (typical). He said he doesn’t think it’s the MagSafe board because “the charger still lit up and changed colors” when they plugged in their own charger it changed from green at first, to amber. But the 1, 3, and 5 pins are fine? The middle, 3rd, pin is what your wiki article says is the “data pin” which looks like it works fine. This is the pin that determines the led color so of course it’s going to work fine. Not all components of the board need to fail for the board to be considered defective. The grounding pins look fine too, the power pins however (on the MagSafe board in the mac) they look fried and dead. I suspect that the case is that the voltage being sent out is incorrect and this is preventing the computer from turning on.

^ do you think this is a logical conclusion to come to? The Apple genius bar just told me to toss it and buy a new Mac, I’d like to repair it if possible and my line of reasoning for still thinking it was the MagSafe board is that it’s JUST the 2nd and 4th pin burnt out.

@brokegirl I think that's a logical conclusion! There's a chance there is still a main logic board problem, but it will be hard to know conclusively without first replacing the MagSafe board.