I have a broken Surface...
... brought to me by a neighbor who asked, "Why has the screen detached itself from the tablet? Can you fix it?"
Mind you, the screen is still attached, but it is hovering about 6mm above the rest of the unit. Why? The battery blew up like a balloon. And no, I can't fix it. It is held together entirely by glue.
The only reason the screen didn't crack is that the battery heated up so much while failing, or inflating, that it melted some of that glue. Now that it's cooled off? The glue has solidified again so there is no way to get the thing apart to fix it.
Do you suppose they'll replace all these units? Not on your life.
You know the saying: Hell is full, and guilt-ridden engineers are walking the Earth.