The "ON"-Key on my HP 48SX works only with very hard pressure.
I intend to open the calculator, to look what is wrong.
Does anyone know how to open it?
Thanks
Georg
Check here for detailed instructions on how to get it open. The author promises to release repair guides for dead keys and other problems in the near future.
Click here for the repair guide.
Quote:
The "ON"-Key on my HP 48SX works only with very hard pressure.
I intend to open the calculator, to look what is wrong.
Does anyone know how to open it?
Thanks
Georg
Your problem just might be a very dirty contact within the keyboard layer. That is, I suspect that opening the calculator may not do much for it as there are no other keyboard problems to indicate any problems with the keyboard connector with the PCB.