I had a Serenata. Used it for about 5 years and it was still great until the tech was sooooo out-dated I had no choice to change.
Put it in a box with all the docks etc…(including the full metal stand/dock. Let it sit there for a few years. I checked it out I remember a couple of years ago and although it charged, the screen looked like stripey red/yellow/black wall paper. The screen was intact but thought something had gone inside. chucked it (regret).
Im not sure if there is internal oxidation, or a chip has corroded or whatever but I remember both the Serenata and Serene had a no-compromise LCD screen (meaning out of date pixel count and non-standard size when it was born). I would be shocked if replacements could be sourced. Are they all something more than an expensive paper-weight or garbage bin filler now (sadly)?