A couple of months ago, my Harmony 890 screen started acting up, there were white lines in the display, but it still worked enough to read it.
But, a few weeks later, the display completely died, nothing showed up on it anymore. Its pretty hard to use a 890 when the screen is not working.
I called tech support, and they had me load the latest firmware, but it did not help. They sent me to level 2 support, but they could not help me either. Since it was 1.5 years old, it was no longer under warranty. I could send it in for repair, but I was not sure how much that would cost.
So, I decided to look for a broken 890 on ebay, which had a working screen. I found one, but was outbid on it. Broken 890's are kind of rare on ebay.
So, I took a chance, and found a broken 880. It would not charge anymore. Cost was $34, including shipping.
I bought it, took apart my 890, removed the screen, and then installed the 880 screen.
My 890 is working again.
Hopefully this will help somebody with a broken 880 or 890 display.
BTW, the "broken" 880 I bought, that would not charge. I think the 880 was fine, the charging base was not working. When I placed the 880 on my 890 base, it turned on fine. It would not do anything with the base that came with it.