A very weird HP48G

[GreyUser]

With some practice, they can be popped opened and closed without any external evidence. It’s only when you open them again you will see epoxy or whatever method that was used to close them back up.

I’ve upgraded hundreds of G’s to 128K, it’s only the ram chip that changes and you don’t need to remove the logic board if you hand solder. If you use hot air, I’d recommend removing the logic board.

Perhaps the only external tell is the positive battery clip. If the clip isn’t bent into the correct profile before closing it up, the clip will sometimes be too high and not lock the slot in the clip onto the plastic tab of the case back.