on button does not work

[Giancarlo]

it happened to me that one day several Hp Prime keys didn't work anymore.
Reading on this forum i understood that it was possibly due to an internal cable unplugged. i opened my calc and i just ensured that the keyboards connector was firmly plugged and that's it.

i am not assuming that you have the same problem. i am just telling my personal experience.

thanks

Giancarlo