Since you are able to turn the left unit off, perhaps you are correct and the problem is the right unit. When they replaced the instruments, are you sure they replaced them entirely? Is it possible they just replaced the GUTS and reused the housing? Could the press button or the rocker switch or the spring contact that originally was problematic be the original? That is the only thing I can imagine would cause the charge cradle to turn off the device but not the button. Understand?
You said you have a good ? Maybe he can temporarily swap a loaner with you. But he does it so you know it’s a whole new unit. Takes under two minutes to copy the fitting to the new unit!
I am interested in this because I am a lifelong troubleshooter of gear!
You’re ignoring this member’s posts.