My 880 just stopped working. It was working just fine yesterday. Then the power flickered on and off for like a split second. I had to turn all devices on again and the remote stopped controlling. I've tried everything: relearning infrared commands, troubleshooting with the software, and nothing works. What could be the problem??

bump

Give Logitech's customer support a call. They're usually very good about helping with problems on these remotes and will usually replace it if it is broken.