Harmony Remote no longer works; all replacements non-functioning as well

In my master bedroom I have a Harmony 880 remote that had controlled the TV, HR24 DirecTV receiver, a Sony DVD player, and a Roku3. A couple weeks ago it suddenly stopped working. Completely. The battery was only a couple months old, so I know that wasn't the problem, especially since the battery worked in other Harmony remotes. I tried troubleshooting things, but I was unsuccessful. I ordered a replacement one from ebay, but THAT one didn't work. At all. So I then purchased a new one off ebay, but THAT one was also totally inoperative. Nothing on the remote works: I can't turn the TV on/off; can't change the volume; can't operate the HR24; can't control the Roku3; can't control the DVD player--nothing. I've updated the Harmony software, but that doesn't work. For the life of me, I can't figure out why 3 different Harmony 880s all do not work.

 

No, because that battery works fine in my other Harmony Remote. Plus, when I swapped batteries from my other 2 Harmony remotes, the problematic 880 still didn't work.

 

Nope. No changes. The remote simply stopped working and will not control anything. The same problem continued with the two replacement 880s. None worked.

I did take my other 2 Harmony remotes, which are used in other rooms, and updated both to see if they'd work in the master bedroom. They both do. It's only the 880 that simply will not work.

 

Doesn't work in other rooms, either. Nor does one of the other 880s I had purchased (but not yet returned). My Harmony Ones work, though.

 

When you press the buttons--any button--on the 880s, including my original one and the replacements I bought, which includes a new-in-box one, you can see the signal being sent. It's in the upper right corner of the display. The battery level is at full strength. My Harmony Ones (I have two of them in other rooms) work fine. Moreover, when I programmed my Ones to add my bedroom activities to see if it was the devices that are a problem there, my Ones worked! They can control my master bedroom devices--all of them. It's just some weird thing with the 880s: my original one, a used replacement, and a NEW replacement all are completely and utterly useless, and I cannot figure out why.

 

Believe it or not, yes I did do that. After a bunch of other troubleshooting attempts, I reset it, if you can call it that, to its basic status. I then added one single activity, like "Watch HR24-500," which is the receiver in my room. Nothing. I tried the DVD player, then the Roku 3. All nothing. I haven't tried it in someone else's home yet. I'll have to find someone who'd let me experiment with one of their items. BTW, I've submitted this as a case to Logitech's support people, and I posted it on the Logitech support forums. It's the only thread there with no replies. Go figure. I seem to have everyone stumped.

 

I agree.