HP-67 stuck in scientific (DSP 0) mode

[Hiwi]

(11-02-2023 07:26 PM)teenix Wrote:  Does the lit segment change when you key in a 1 or 2 or 3 etc?

No it is still there. Also when using EEX. But it is only visible in RUN Mode not in PGM Mode.

I cleaned everything, this was necessary!
But cleaning did not solve this display problem.
I changed the cpu PCB with no sucess, must be a driver or led problem.

Ralf