I have my Slingbox Pro-HD connected straight to coaxial cable. I am able to change the channels if I input the channel number but it does not work with channel up and down buttons. It looks like it's trying to change it but it comes back as the same channel. This happens on both Windows desktop and Android tablet. Any suggestions?
Edit: it looks like the Pro-HD tuner does not really like my TV cable. I tried with an OTA antenna and the internal tuner changed the channels using channel up and down buttons with no problems