Are there any "good" HP 30b keyboards out there??

[Eric Rechlin]

Yes, there are. In fact, the majority of them are good. Unfortunately, that's still not a great ratio -- yes, a significant fraction of them drop keystrokes. I found I was able to repair some of them, but I also sometimes made it worse or ruined the whole calculator in the process. Towards the end (later in the production run I guess) I think it was at least 20% and maybe even probably closer to 40% that had bad keyboards. It got really frustrating which is one reason why I stopped selling the 34S pre-configured.