Classic HP Calculator Repair Experiences

[teenix]

(09-28-2020 01:17 PM)Hans-Peter Wrote:  

(09-28-2020 12:16 PM)teenix Wrote:  ...

I also have HP-55 and HP-65 drop in CPU replacement boards using a modern processor, but again, the keyboard, display circuity (and card reader) must still be functional, although there is internal storage available for programs.

Tony

Do you have also a 97er repair kit (Mainboard) in the near time?

Hans-Peter

I have been working on one but the virus lock-down has stifled development. The circuit board is designed and a lot of software has been written so hoping to continue soon.

cheers

Tony