I finally received my HP-80 and everything seems to be working fine, but I noticed some little idiosyncrasies with operations. I noticed the first one when I turned it on. In order to have the calculator turn on, I have to not only slide the on/off switch, but press and wiggle it a little bit when it is in the on position or the calculator will turn itself off. After I do this little maneuver it stays on and works fine - it's just a little diconcerting because I wonder if this will give me problems later?? The other idioysncrasy is with the zero key. I have to apply a significant bit of pressure to have it register and this sometimes causes multiple entries. I realize that this is part of the fun of owning a "Classic," but when does the concern rise to the level of attempting a fix. I'm sure others have similar experiences...? BTW - I love the LED's! They predate the time when I started using calculators, so this is new for me and I'm a convert.
Cheers,
Mike