I realized that HP is about to change design for HP17bII+ and HP10bII I rushed out to get the "old" designs before having to pay a premium on eB.. for used ones. After all they're for collecting not for daily use - in that case I've probably bought the new ones. First impressions are great and having read earlier threads about the 10bII I was a bit skeptic but apparently the problems have been solved. Both display's are probably amongst the clearest displays except for LED's I've seen. The 17bII+ is way better than my old near-near mint 17bII from '91. Kudos for that!
For the fun of it I've also bought an HP 10S. What the heck, not a big price and unfortunately there's no user manual in a language I can understand (I was aware of that when buying).
However, the display of the 10S must be the _absolutely_ worse I've ever seen. The contrast is very low. I've tried changing the battery though the one that's in it seems fine. Didn't help.
I've searched for a manual online but can't find one. All I can find is various pages stating that the contrast is adjustable (I have my doubts)
Can anyone tell me: Is the display contrast adjustable and if, then how?