HP97 questions

[Dave Shaffer]

I rescued an HP 97 from my parents' house a year ago. I’m getting ready to sell it, since I don’t have any need for it.

It seems to be in pretty good shape, but I have a couple of questions, which I hope the collected MoHPC wisdom can help me with.

I’m sure the card reader wheels have turned gummy. In fact, I bought an O-ring repair kit on Ebay many years ago so my Dad could fix that. However, he never got around to it. The O-rings are still there, along with instructions on using them to fix an HP67 (with no mention that I see about the '97).

So, first questions) Is this the right kit? Do both calcs have the same card reader internals? Are the repair instructions basically the same? Should I try to fix it? I’m fairly handy - but does that markedly improve the value of the calc?

If I try to use the printer, it seems to be trying to print but the paper does not advance. If I pull the paper out by hand, the printout looks fine.

Second questions) is this another "gummy wheel" problem? Is it easy to fix?

Question 3) is there any self-test for this calculator? I couldn’t find anything on the Museum pages. I’m guessing this is a feature of later generation calculators.

Thanks for your help.