NP-41 Emulator (may be)

[Chris Chung]

(12-20-2017 06:43 PM)Massimo Gnerucci Wrote:  

(12-20-2017 12:27 PM)Chris Chung Wrote:  Don't tell me you have a lemon, we had far too many.
just kidding, another lemon won't surprise me. Just be patient when I pace through a solution.

I do enjoy the NP41 a lot, it's the right size (NP25 too small for everyday use), got a nice, square and simple case. I only use very basic functions though (mostly 4 function calculations). Differences in making 1 and a whole batch is quite an adventure.

Not a lemon, but the "9" key didn't register at all. I pushed it down as far as I could and things have improved a little but it is still worse than others.
I tried something simple and didn't find other issues for now.

I bought the 3V USB adapter and cables: what do you suggest now? Should I clear the ROM banks, flash the latest firmware, anything else?
It sits nicely in its green :/ cover but, as reported, key clicks sound louder in this tiny soundbox, and the display... wow!
Thank you.

Key need force to register is more likely a hardware problem. Firmware update may not fix it. Could try rework the solder joint. Can test by jumping a piece of wire between the two ends of the button. A paper clip also works.

You may want to try loading ROM or new firmware. I am also interested in learning how a firmware update goes in one of the units.