Mine cant seem to handle weak OTA signal...It freaks out and locks up. I have a rotator since my channels are in different directions.. so if i put the 622 on say fox 39 and I've been watching channel 5 (60 degree difference) when the antenna gets close to the signal, the 622 starts to pixelate and then locks up with no video on OTA OR satellite programing. All the graphics and audio work fine, but no picture. Its frozen about 4 times in the last hour.. It does have software 350, so i just set it up for an upgrade, we'll see if it gets any better.