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HP-67 not behaving?
08-29-2022, 11:56 PM
Post: #8
RE: HP-67 not behaving?
I eventually worked around to opening the calc - my findings:

- AndiGer was spot on - the restorer did leave out the screws under the label! Thanks AndiGer!!

- The PCB is in excellent shape (no corrosion etc.). I visually inspected (with magnification) all the solder joints and they are excellent. Even so, I did carefully re-solder all the ROM/RAM pin 5s per Tony's suggestion, but sadly no change in symptoms :-(

I'm surprised to see this failure in a clean working unit that was stored in a "cool, dry" drawer, but I guess age takes its toll on everything, eh?

I have some potential donor 67s that I will raid to repair this unit - it's cosmetically perfect and the card reader should still be working (since it was well restored already).

Thanks to all!
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Messages In This Thread
HP-67 not behaving? - markhen - 07-27-2022, 06:03 AM
RE: HP-67 not behaving? - teenix - 07-27-2022, 10:09 AM
RE: HP-67 not behaving? - markhen - 07-27-2022, 03:30 PM
RE: HP-67 not behaving? - AndiGer - 07-27-2022, 04:31 PM
RE: HP-67 not behaving? - markhen - 07-27-2022, 05:18 PM
RE: HP-67 not behaving? - Duane Hess - 07-29-2022, 12:36 AM
RE: HP-67 not behaving? - markhen - 07-29-2022, 04:38 AM
RE: HP-67 not behaving? - markhen - 08-29-2022 11:56 PM
RE: HP-67 not behaving? - teenix - 08-30-2022, 01:58 AM
RE: HP-67 not behaving? - Dreato - 09-02-2022, 04:11 PM
RE: HP-67 not behaving? - markhen - 09-03-2022, 11:34 PM



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