Instruct: Classify the given review as either positive or negative.
Query: Doesn't work

After reading all the good comments, I went out and got one of these today. None of the codes would even turn on my Tivo Series II.It would turn on and operate most of my TV (Samsung HCL4715W) functions - except for one very important one. It would bring up the TV/Video screen, but then there was no way to navigate or select a new video source.It also would turn on an operate the basic controls of my Bose 3-2-1 system. But, as with the TV, it had no means of switching between sources.Bottom line, this thing was near useless. I am taking it back to the store tomorrow in hopes of getting a refund.