Uconsole suddenly turns off

[white-round-square]

Bookworm 6.12.y for the uConsole and DevTerm

That will cause problems, they need to be inserted. With the battery tray at a 45° angle insert the battery tray from the front of the main boards connector not from the top, then lay flat. [batt-tray] It should look like the top picture not the bottom one.