OK, anyone who knows what an HP-41CV is belongs to a small, elite club (

). My HP has been my constant companion since 1982. I use it every day at work and don't know what I would do without it.
It has performed flawlessly over the decades, but I have had a problem lately where the On/Off button is acting intermittently. I have to push it two or three times to get it turn on and/or off. Does anyone know what might be going on?
I have also bought an $8 app for my iPhone that is essentially an HP-41CX that I use very often when I'm not at my desk. I highly recommend it for those in the RPN club...