Just thought I'd share my experience with my Harmony 880 as this will probably happen to others here as well. My 880 just stopped working overnight after setting it on the charging dock. The IR commands did nothing. The remote's display still worked, but not a single command registered. I could see the "signal sending" icon appear near the upper edge of the display whenever I pressed a button that sends IR commands.. but none of my hardware responded.
I tried taking out the battery pack to reset it, but that didn't help, so I tried updating the firmware but that didn't work either.
I called Logitech and they asked me to try updating the firmware again, but that again didn't work. Then Logitech let me know they could repair my remote at a cost because it was out of warranty which made me curious. After some googling, I discovered that there's a bit of a design flaw in the charging dock where if you don't place the remote PERFECTLY on the dock, that it'll somehow mulfunction, and cause the IR LED emitters to burn out.
I also read somewhere that someone swapped them out from some old remotes he had lying around and it worked out great, so I thought I'd try it! I asked Logitech by email for the exact spec but they refused to tell me what the spec was.
I dug out some old Philips universal remotes out of my closet, took them apart, and unsoldered the IR LED emitters from them. Then I swapped out the burnt out ones in the Harmony with these and it worked out PERFECTLY. Note: Make sure you get the polarity right or they won't work. You can tell if they're working or not, by aiming your remote at your digital camera, and see if the LED blinks white when you press a button through the camera's screen. When taking the original burnt out ones from the Harmony, take note of how they are installed, in order to have a good idea of how to put in the next LEDs. If they then don't blink, you may have gotten the polarity backwards when soldering them in.
Here's some pics of the remote after disassembling it:
http://i32.photobucket.com/albums/d17/swervepf/logitech harmony repair/CIMG0001.jpg
http://i32.photobucket.com/albums/d17/swervepf/logitech harmony repair/CIMG0003.jpg
http://i32.photobucket.com/albums/d17/swervepf/logitech harmony repair/CIMG0004.jpg
Be careful to use a precision flathead to push the tabs along the side of the remote in towards the remote. There's 4 on each side and the pics show you where. Being cautious in this step will prevent damage to the outside of the remote's casing leaving no evidence of repair whatsoever, and retain its smooth and confortable shell.
The repair took a total of about 30 careful and patient minutes and was free. I thought about replacing it, and in the worst case scenario, I would have bought the Harmony One, but for $200, I figure I could better use that elsewhere.
