HP65 vs HP67 card reader



#2

ciao a tutti,

I'm trying to repair the HP65 shown on the left of the picture,

it is working but the previous owner has ruined the head cabling.

Between my HP67s I have found the one pictured on the right,

which differently from the others has a card reader apparently identical.

What do you think ??

Can I take this HP67 card reader and use it on the HP65 ??

Or, on the other hand, does anyone has ever found a replacement for
the HP65 magnetic head ??

As usual, thanks for any suggestion, enjoy the weekend !!!

Alberto


#3

Ciao Alberto,

IMHO, you can swap entirely the card reader assembly (head/motor/Reader PCB) among the calculators. The 67's sense-amplifier is compatible with the 65, I have changed this chip with success in one of mine.
For sure you can't make damage to the calculator's logic PCB.

About your second question,

Quote:
Or, on the other hand, does anyone has ever found a replacement for the HP65 magnetic head ??

take a look at this old post:

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv019.cgi?read=167082#167082

Let me know how the work proceeds,
take care.

Ignazio


#4

Ciao Ignazio,
I sure will !!

Thank you very much for the hint, take care Alberto

OT:
Didn't we have to call each other on the phone over the weekend ??


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