Hi, today I got a brand new Pioneer DVR-550HX First, the performance of the DVB tuner is quite poor compared with the internal one on my Samsung M87 TV. I don't know the specifics, I'm not expert but I can say the the picture quality is quite worse than the Samsung. That would not be a big deal, since the recorder tuner would only be used when recording, which I don't do much anyway. The real problem is, the DVB tuner works OK if the output is set to 576p, but if I set the output to 1080p, most channels will show "No signal" and those which show images is with constant freezes or blocking (typical of poor signal). It auto detected all channels when it was set to 576p, but when in 1080p I cannot get a decent view. Now, what should I do? Return it and ask for a refund, or for a replacement unit? Is this the normal for this model or just my unit? Anyone experienced such a thing? Thanks!