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HP-67 stuck in scientific (DSP 0) mode
07-18-2020, 01:09 AM
Post: #8
teenix Offline
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RE: HP-67 stuck in scientific (DSP 0) mode
It might also be worthwhile having a look at the contacts between the CPU board and the keyboard. There might be some corrosion causing poor contact.

Other checks are corrosion on the circuit boards and battery contacts.

As mentioned the power switch could be in need of a clean. The original lubricant if still there would be "gunk" by now.

cheers

Tony
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RE: HP-67 stuck in scientific (DSP 0) mode - teenix - 07-18-2020 01:09 AM



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