It seems that you are having some issues with your new Slingbox PRO HD, since you are not able to get all of the channels. One of the most common reasons is that some of the channels are encrypted and they will not be able to work with your Slingbox.
Make sure to check the following link. It will allow you to get some steps to follow in order to fix this issue.
First, verify you can actually get those channels, and verify that when you change to those channels on the computer, the box correctly changed channels and didn't wind up somewhere else. (the virtual IR remote can screw up)
If the channel changing is working and the picture shows up on the tv, but not on the computer at the same time then it's probably encryption.
Use the component cables, if that is an option for you.
Otherwise, if you are forced to use HDMI, you can buy a HDCP striper. (Removes encryption from HDMI stream)
I am also having trouble getting HD channels on my HD Pro. Very frustrated ! When I set it up originally It worked fine for about an hour now no HD.
IF someone doesn't help resolve this I will return it for my money back, we are in a recession, customer service should be the number one thing on your mind! Your customer support leaves much to be desired on line help is NO help.
Ja det lyder som det samme problem, har godt nok ikke HD programmer men Coaxial tilslutning, havde den gl. Slingbox pro (den røde) og der var ingen problemer med kanalerne, den gik desværre i stykker, (kan ikke få link på netstikket:-( ) så købte jeg den nye og der mangler jeg 10- 15 kanaler:-(
evt. skriv på min mail email@example.com ..