This is the JP1 beginners forum. There's no such thing as a stupid question in here, so post away, but this forum is just for JP1 users and people considering JP1, non-JP1 users please use the appropriate forum above!
I have a URC-7541 and have been programming it just fine using a JP1 cable.
A short while ago it stopped working for no apparent reason, I have checked the batteries.
The device buttons light up ok when a button is pressed and the IR.exe program doesn't find a problem and even flashed the TV button twice after an upload.
However if I program in any of the devices which were working fine, they now do not operate the device, it is almost as though the output LED has broken, is there any way to test this?
If you are good in soldering and you are willing to give it a try, you can take the remote apart and solder in a new IR LED (or two, I don't know, how many LED the 7541 has).