HP-25 Co-luminous segments

[Tom Flatterhand]

Hello Tony,

(04-07-2022 11:04 AM)teenix Wrote:  Sorry, I should have asked in previous post, do the keys in that row work ok? (- 7 8 9)

Have you checked inside for corrosion?
While it is open, you might try wiggling the circuit boards and reassemble. Might be a dodgy connection pin.

yes, the keys work properly. It is only the faint glow of the upper segments that bothers me.

It would be the first time I've opened a Woodstock calculator. I know that under the top rubbers are the screws. But my rubbers look fine so far. How safe is it if I try them out with a screwdriver that they won't get damaged in the process?

On the other hand, I would really like to see inside and try some of your tips.

See you

Thomas