you might recall that I was having an issue where my SD-1/32 suddenly started losing the contents of its usually-battery-backed RAM when powered off. I replaced the battery (putting in a battery holder to make future battery swaps easier too, but that didn't help. So I figured the culprit might be the capacitor that is supposed to smooth the transition of power from power supply to battery and vice versa – and today I replaced that capacitor. Alas, that did not have the curative effect I was hoping for - when powered off, the RAM contents still disappear. Yes, I put the battery back in the battery holder. Without the battery, the keyboard complains loudly that the battery level is too low; but with the battery in place, no such complaint – everything looks like it should be working ... but it isn't.
I'm a bit stumped. Of course this doesn't make the SD-1/32 impossible to use, but it does mean that everything has to be saved to and then reloaded from floppy disk whenever I want to do anything ... which is rather annoying, and considering the age of the drive and the floppies as well, is perhaps not ideal in that respect either. (Of course, that aspect can be addressed by replacing the floppy drive with a floppy emulator, but still.)
Does anyone here have any other thoughts or ideas about what might be the cause of this behaviour (that the RAM fails to keep its contents when the power is turned off)?
Best wishes,
// Christian