HP-67 Diagnostic cards, different versions different behavior
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09-21-2021, 08:36 PM
Post: #9
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RE: HP-67 Diagnostic cards, different versions different behavior
Here we go !
HP-67 1612A01116 SD15C HP-67 1612A01116 SD15A It actually took a little over 2 minutes, but the SD15C worked out As you may see I'm running the SD15A from a copy, since the original look to be corrupted Would I overwrite the original, if I connect the WPS to ground will I be able to write onto write protected cards ? This unit has a weird behavior, once restored, if used without the outer green bottom shell reads and write 10 times out of 10 times With the bottom shell this ain't true anymore ... I have found that, probably because of the de-soldering of the head, the cables push the card reader PCB a little out of its original place and this, when the bottom shell is tightened, twists the unit hence the unreliable behavior By putting a small piece of double sided adhesive tape between the card reader pcb and the inner shell we have somehow fixed this, I'm saying as it may be useful to someone, still it is not reliable as we would like Also, even if cleaned with a 50% vinegar solution the card reader PCB is not really really clean and I'm not sure whether what is going to be worst between letting some small spot of oxidation (under the sense amplifier) or molest it again with another vinegar solution bath, what's your take on this ? take care and thanks for the support !!! Edoardo & Alberto |
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