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HP 48SX, how to open


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Post: #5
08-03-2006, 06:12 AM
Georg Lahm Offline
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Posts: 5
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Joined: Jan 1970

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

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Post: #6
08-03-2006, 07:29 AM
Jeff O. Offline
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Joined: Jul 2005

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.

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Post: #7
08-03-2006, 10:00 AM
Han Offline
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Click here for the repair guide.

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Post: #8
08-03-2006, 10:03 AM
Han Offline
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Posts: 709
Threads: 104
Joined: Nov 2005

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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