> The failure doesn't necessarily have to happen at the junctions for the junctions to be a cause. Indeed, it can also happen that because some connection is f

> The failure doesn't necessarily have to happen at the junctions for the junctions to be a cause. Indeed, it can also happen that because some connection is failing, too much current flows through the remaining ones, but this is clearly not what is happening here (because it's not the inner connectors that are melting, and also because Igor tried and couldn't replicate this). This really looks like heat from high resistance, and the outer connectors are simply those experiencing the most mechanical stress, and it's really easy for these 2-slit-connectors to get bend out of shape.