I have had one bad experience with a Marantz DVD changer which I bought factory refurb. I bought from an authorized dealer. It was evidently a lemon, it failed within the first week of receiving it. It would just shut off and not turn on, which I assume is the reason it was refurbished in the first place. I sent it back to Marantz and after waiting a few weeks to get it back, it failed again for the same issue, again within about 2 weeks. I ended up just giving it away to someone, just wasn’t worth the trouble anymore. I won’t buy refurb again but maybe you will have better luck.
Mike