HP-67 stuck in scientific (DSP 0) mode

[tribidouille]

Thanks, ok, so I should change the post subject.

The DSP key seem to work. When I press, the display is off for a tiny while.
But no, definitely, I can't exit that mode. DSP . 2, DSP 5 ... Nothing changes.
Of course, ON/OFF also does nothing on the situation.

Then the HP-67 is broken?
What sounds strange is that calculations (one digit, lower than 10) work, programming works but unusable when I come back to run mode...

(07-17-2020 10:37 AM)Maximilian Hohmann Wrote:  ...
accessed by pressing "g" followed by "DSP"
...

On the HP-67, I guess you mean just pressing DSP as this function is directly accessible on the key:


(pic from wikipedia)

Or do I missunderstand?

(07-17-2020 10:37 AM)Maximilian Hohmann Wrote:  ...
(*) Note that the HP-67 is one of very few calculators which has the labels for the shifted functions printed underneath the keys on the keyboard!

Then, worse that it is broken.
But most bad, I like it very much.
I just found it in a box with electronics, where it was laying since 15 years. I directly fell in love. Even more than with the 41C. This card thing is so cute, and clever!

I can solder. Also here, it is human sized. If I'd know what component to change (if still on the market), I could replace it. But at the moment, I feel like playing roulette in front of all its components: black, red, which number? :--)