Melted MagSafe Ouch!

That's ugly 😟 I almost wanna cry.

Wow. That's really sad. I bet Applecare doesn't cover that one.

iSMH

My question is this - how did this happen? Any clues?

Bob

My question is this - how did this happen? Any
clues?

The guy says cats but that really doesn't make much sense. If the cats pulled it out, then it would be disconnected, if they pull it partly out, it would snap back in.

Looks like it must be a defective power adapter. I'm sure Apple will want to capture it.

That looks more like a lighning strike or a power surge ...

looking at the connector, you can see that the pins are just 'touching', not snapping into each other. It could be that for this particular model the pins where a bit too short, creating a tiny airgap (which conduct, but conducts badly).

I found that the power supply itself is actually extremely hot. Probably not good to cover it up in any way. I would hope that it has some kind of overtemp protection.

Another possible reason: The power connector is right next to the hottest part of the laptop.

To me it looks like some kind of liquid spilt over it...