Yes you can tell if the card is working from the network window when you click on the tuner and then when the browser opens you click on "card" and then check Host ID. It should read with your host number and cable card id number (not the letters that are on the card) if the card has been authorized it should say it's been authorized on this page. Now I only have experience with the SA cards and it sounds like you have Motorola cards and hosts so the other aps will be different and have different values. When you initially posted the CA page, the second tuner was "short" compared to the first tuner which would look like it wasn't authorized or some other problem.
It may be you have to a replacement cable card for the second tuner. It sounds like it was doing everything it's supposed to without a card installed. That would point to a pairing problem or a bad card. Once a card has been activated it's kinda hard to reset them without reflashing them.
You can try what I've had to do with tv sets that won't reset. That's a total shut down and since you have internal tuners it would mean shut down, unplug the computer, removed the cable cards, remove the tuner cards. Restart with the cards out, shut down, put the tuner cards in (without cable cards) restart. Shut down, install cable cards and then go through tv set up. The host numbers should turn up in Media Center.
If you do this, make sure you mark the cable card and tuner. Do not swap them since that will swap the host and cable card ID numbers and the cable system will not be able to hit the card and I think the system flags the card as bad or stolen and then it has to be replaced. If you put them back in where they came from, then you should be able to get a hit from the cable company (we can do it on automated dial in to Time Warner through the voice prompts and it automatically sends hits to all the item on your account).
The external tuners are easier to reset and troubleshoot since you can just unplug the power supply and force a reboot/reset without having to remove anything. Remember that both lights must be green to show that the tuner is working and the cable card is working. If one is red or flashing it's a signal that the card didn't start or get an IP address or get authorization. If the card is out only one light should be lit and it should be green.
To get your other tuners to work (after you get this working) I think you'll have to do the registry hack for multiple tuners and I don't now if the guide will work without TV Pack 2008 installed.
John
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