Sorry about the lockup problem. I don’t remember hearing about that with the 3100, but I guess they are not all perfect.
1. This sounds like you might have been playing with the “alias” feature. I don’t have a 3100 yet so I can’t test out my theories, but if you did, then you should see page 75 and clear the key on the video 1 which is giving you the problem. Then, that key will revert to its normal state and you can either use it or teach something else to it.
2. Discrete codes are linked to the device code, so if you use a discrete code of XXX in the TV device, it will not be the same as XXX in the vcr device, and the XXX discrete code for a Sony won’t be the same as for a JVC. They are all unique, so there is no repetition.
Which OFA learning remote do you have, and what setup code are you using. Foir the most part, only setup codes starting with zero will let you use discrete codes. You have to teach the applicable setup code to the component key on the OFA remote, for example, for a Sony DVD, the code might be 0533, which would allow you to access the discrete codes. If you are using the advanced codes from this list
[Link: hifi-remote.com] then 113 should turn it on if you have done all the other stuff right, and if your OFA remote accepts advanced codes. Not all do.
I’m going to quit talking about this subject now until you have a chance to check out what I have written so far, and then if you still have questions, come on back.
3. You can have as many component buttons for a particular component as you want. The first digit of the component code determines the component, so if you had 6 vcr’s, you could load the component code for each one to a different screen and they would all function independently.