I have a Direct TV Tivo that is about 5 years old. A year ago I started getting intermittent scrambled screens. By powering the unit off/on I could solve this for a few days. Now, my Tivo receiver is frequently showing "please wait, powering up" message and it hangs there. I have to turn off/on the unit to get past the power up message. Is my Tivo dying? Can I replace a Direct TV Tivo receiver now?