Been futzing with my Epson ActionNote on and off. Arrived early in the year dead HDD, no CMOS battery life...
Anyway, after having it sitting partially open for months (interrupted project, story of my life) I got to looking at what could be done with the CMOS battery... it has a dallas module. Now I saw a webpage where dude said he just swapped it out, because it was socketted, and I first glanced at mine and was "Aw, must be nice." since mine was sitting right down flush on the board. First impression was it was soldered down... then I noticed little raised silvery rings... ahhhh...
Yeah it's got those "socket in pin" individual pin sockets that are like zero profile not just low profile. So eased out the dallas and stuck in a newish one. Yay, full functionality. I had had another HDD plugged in, thinking it was necessary, but it had a translation I could not get this 386 era BIOS to like very much. On a whim, I tried the old (Original?) HDD and found a translation that worked and booted. So that was not dead after all. Kinda boring stuff on there, DOS 6.0, Win 3.1, and some desqview network/terminal kind of setup that did office/admin off a server over modem, no files on it to indicate what really. Might have been legal or medical.
Next job, get the floppy working again... IDK if the connector needs cleaning or I got a micro-crack in the stupid ribbon from unplugging/manipulating. Hate those things.... but know enough to be super careful with them, but that's not always enough when they're old. Was working but crunchy sounding before disassembly, might need some lube, but it's failing to get anything right now.
So interesting lessons here, if you've let any boards sit and wait because Dallas needed desoldering, take a closer look, maybe used those socket pins. They will look "fat" from the back of the board... or you might spot the wider than regular riveted through-hole silver ring around the pins.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.