Yes, TV1 remote works on IR. TV2 works on either IR or UHF. But, the advantage of the TV2 is that you can use it way out of the range of IR. The universal remote that you referenced appears to work on IR only.
The old UHF remote is probably working on a different frequency that the receiver is expecting. But, I think that you can change the frequency in the receiver for the TV2 remote. I forget the details of how to do it; something with system setup. Check the manual, I know the procedure is in there. No guarantee it will work since the old remote was designed for a different receiver.
The old UHF remote is probably working on a different frequency that the receiver is expecting. But, I think that you can change the frequency in the receiver for the TV2 remote. I forget the details of how to do it; something with system setup. Check the manual, I know the procedure is in there. No guarantee it will work since the old remote was designed for a different receiver.