I came back to my washing machine this morning to find it hadn't done its job, it was showing a code F06, which google says is a drive motor tachometer error. As I occasionally get codes after which it runs fine, I hit start again, only get the code again. Also, the tub makes weird sounds when it was trying. Taking out all the wet wash, and taking the top off, I can see that the belt is trying to turn the tub, but failing. I can manually turn the interior tub now, but it doesn't feel like it's attached property - before when I did that I would feel some resistance but the tub would turn smoothly, now it almost rattles - it turns, but it doesn't feel like it is attached any more.
Currently tearing it apart.