how can I open a HP 34C

[pvnijn]

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[Katie Wasserman]

(08-11-2014 01:39 PM)pvnijn Wrote:  undefined

-remove the battery door/back cover

-remove the two obvious screws

-remove the 2 screws hidden under the rubber strip

-use a credit card (or similar) to release the internal plastic clips, a thin plastic guitar pick works well. The seam to insert it into is around the top of the calculator.

[hp41cx]

(08-11-2014 02:00 PM)Katie Wasserman Wrote:  

(08-11-2014 01:39 PM)pvnijn Wrote:  undefined

-remove the 2 screws hidden under the rubber strip ?????

[Katie Wasserman]

(08-11-2014 03:36 PM)hp41cx Wrote:  

(08-11-2014 02:00 PM)Katie Wasserman Wrote:  -remove the 2 screws hidden under the rubber strip ?????

My mistake I was thinking 34S. There are only two screws in the battery compartment of the 34C to remove To open the calculator after you remove these you need only pry it open the the point where you're sure your going to break it. But keep going, slowly until it snaps. It will open and not be broken -- although you're going to think that you did break it. I've done this many time and I've never had a Spice calculator break on me.

[Thomas Klemm]

There are a few links at the end of An HP-32E repaired. Calculator 1.

Some of the links are broken as they have been archived in the meantime:

Repair of an Hp 34C by Geoff Quickfall
(A coincidence, really, but I just finished restoring this HP 34C!)


How to open a Spice Model Calculator by Geoff Quickfall
(Spice restoration continue, or, how to open a spice without damage!)


HP Forum discussion about repair keyboard
(An idea for repairing Spice series machines with keyboard problems)

HTH
Thomas

[pvnijn]

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[Massimo Gnerucci]

(08-11-2014 07:07 PM)pvnijn Wrote:  undefined

I concur.

[Jeff_Kearns]

The technique in the attached pdf file I made from 'voidware' has worked well for me when I opened my HP-33E as well as my HP-32E.

There is also a discussion on this topic HERE.

Regards,

Jeff Kearns

[aurelio]

(08-11-2014 09:45 PM)Jeff_Kearns Wrote:  The technique in the attached pdf file I made from 'voidware' has worked well for me when I opened my HP-33E as well as my HP-32E.

There is also a discussion on this topic HERE.

Regards,

Jeff Kearns

thank-you Jeff i've visited your calculator site, nice.
The calculator displayed are from your personal collection or the ones you cosider more rapresentative for each manufactor/kind/series
I see that in the HP "department" there is not the 42s and the 67 as well, is it a choice?

[Jeff_Kearns]

(08-14-2014 11:36 AM)aurelio Wrote:  thank-you Jeff i've visited your calculator site, nice.

Thanks Aurelio... however it is not my site. I don't know who authored it either, but I do own a 42S and a 67 FYI ;-)

Jeff

[Thomas Klemm]

(08-14-2014 03:26 PM)Jeff_Kearns Wrote:  I don't know who authored it

Hugh Steers