Hi Guys, I've got a MBP 2012 13" which I've had over a year now... all has been working fine until the other week when it wouldn't turn on. Well I say it won't turn on, it makes the usual sounds when booting and caps lock light is working but the screen is just completely black. I've sent it back to costco as they offer a 2 year warranty... the MBP came back to me today and they haven't been able to fix it because of water ingress, they say there is slight corrosion on the logic board. My question is, is it worth me taking the back off and having a go at cleaning the board... because when I spoke to them they said it's very slight corrosion. Should I take the back off and take some photos of the board and you guys can tell me if it's worth a shot. Thanks.