Hello to everyone, I'm new to this forum. This is a question for the technical experienced. I have a 2008 macbook pro 15". After 3 years of every day use, the cable of the power adapter got worn at the point were it comes out of the plastic and I caught it making spikes (shortcircuiting). So I break opened the adapter, cut the cable at the defective point and renewed the soldering etc. Everything would be just fine, but... it seems I was so tired and absent minded that (as it turned out later) I soldered it in reversed polarity... I then tried on my laptop and nothing happened, no power, not even adapter LED glowing. Long story short, now the power input of the laptop doesn't work (tried with other adapter as well). With a charged battery it's fine. Obviously something inside there, at the power input section is fried. Question is, do you know if there is some protective fuse/resistor or something like that, that can be replaced or there is only SMD that can't really be repaired? Any info appreciated.