That would be unfortunate. It continues to work fine, so I will leave it alone until then.
Since it seems uncommon, I will chalk it up to the small nuances of any machine -- or perhaps it is an issue of my breaking with regard to this one piece in my system. That could very well be possible.
My notice was when I went to turn on the 712, I was consistently not turning it on after an extended period of creating a habitual practice to turn it on. Fortunately, it was the only questionably piece in my system.