Not sure what to tell, I noticed a pristine R50e and decided to get it, just because I needed a DVD writer, yes a DVD writer in the year 2023, once a year or less.
Overall, there is not much to expect from such an old device, CMOS battery dead, and the original battery dead.
Could not find a lot of videos for taking this thing apart, but the one for R51 was just right, it seems like an identical or very similar device. Video used: https://www.youtube.com/watch?v=W_pf9tfoXHI
VaiPui 