HP 48SX, how to open



#5

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


#6

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.


#7

Click here for the repair guide.

#8

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.


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