NP-41 Emulator (may be)

[Chris Chung]

(12-20-2017 10:41 PM)Egan Ford Wrote:  Update. My unit will no longer power up. Cable or battery. Or at least the display is blank. Is there a reset? Thanks.

Egan, may try to reinsert battery, and press X key if display is blank. If the charge pump failed, the X key in key test mode will toggle charge pump on and off. Toggle off charge pump makes the unit to use Vcc for LCD biasing.

Don't think this is a firmware issue as the cold start display and key test is not likely to fail.

Keys not always registering could mean bad soldering. If you have tools, try to rework the affected button.

If you can get the bootloader going, it won't hurt to burn the latest firmware. The bootloader appears robust.