HP41_RepairDefective HP41?


The definitive book on HP41 Repair: fault modes, step-by-step, for-beginner repair techniques and available replacement parts. All HP41 types described - and how to disassemble and assemble back your calculator. 

Available in Amazon in paperback and kindle formats.

We also repair most vintage HP calculators.


HP 41CV Scientific Calculator - USED

The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Later came the HP-41CV, with 4 times the memory space.

This is a very good sample, perfectly working. Comes with all port covers, the side cover and the battery holder in HP Multijet 3D-printed The Calculator Store version. Comes with no case

180.00 *

New HP50g Blue Used_2

HP50g Blue used in very good shape, including CD with manual and case. There are options with original box and USB cable

 

110.00 *
In stock

New HP 50g Black Used

HP50g black used in very good shape.

90.00 *
In stock

HP Prime

Product no.: HP Prime

 

New version HP-PRIME G2/B1S (2AP18AA) !!  

HP Prime is the first color touch screens in the industry that today’s gadget savvy students can easily interact with.  

We are currently shipping this model all around Europe. This version is approximately twice as fast than the previous version

 

154.90 *
Old price 169.90 €

Sharp 1500 Basic Computer

Product no.: Sharp 1500

Sharp 1500 Basic Computer

100.00 *
In stock

True leather case for HP17bII and other Pioneer calculators

Product no.: PioneerCase

New, true leather case for HP Pioneer calculators, including HP17bII, HP10b, HP14b, HP27s, HP22s, HP32s, HP42s calculators. Dark brown color like the original.

21.00 *
In stock

New Spice Battery holder 3D

Product no.: Spice3D

Battery holder case for the Spice family of calculators, made with 3D printing and springs in stainless steel 304 alloy, to use 2 AAA batteries

24.00 *
Old price 29.00 €
In stock

True leather case for HP12c, HP15c and Voyager calculators

New, true leather case for HP Voyager calculators, including HP12c, HP12c Platinum, HP10c, HP11c, HP15c, HP16c calculators.

19.00 *
In stock

Complete HP41CL

HP41CL with the latest version of Systemyde circuit

 

699.00 *

Card reader repair

Product no.: card reader repair

Card reader repair

60.00 *

Battery holder 3D

Product no.: Battery holder 3D

Battery holder case for the HP41 family of calculators, made with 3D printing and springs in stainless steel 304 alloy

35.00 *
In stock

New HP41c Port cover - 3D

Product no.: Port cover 3D

HP41c back port cover - 3D, new - set of 4.

24.00 / 4 piece(s) *
Old price 30.00 €

Assembled HP-41c battery bay and expansion ports module

Product no.: Flex-PCB Assembled

Assembled module for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price for EU customers.

New price: cheaper circuit translating to 10% lower price!

55.00 *
In stock

Assembled HP-41c battery bay and expansion ports module Flat

Product no.: Flex-PCB AssembledFlat

Assembled module for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price for EU customers.

This is the FLAT version, when the screw head domes are broken and grinded down - see pictures.

New price: cheaper circuit translating to 10% lower price!

55.00 *
In stock

New Zebra connector for HP41C repair

Product no.: Zebra PCB

This piece is for repair of HP41c full nut calculator, substituting the damaged or corroded zebra connector that links the main board with the processor circuit. New design.

16.00 *
In stock

Zebra + Lower post

Product no.: zebra+lowerpost

Set of zebra + lower post repair piece

26.00 *
Old price 41.00 €
In stock

New HP41c side cover

Product no.: Side Cover

HP41c side cover.

8.00 *
In stock

Sponge for HP41c standard case

Product no.: Esponja

Sponge for the standard HP41c vinyl case

2.00 *
In stock

New Woodstock Battery holder 3D

Product no.: Woodstock3D

Battery holder case for the Woodstock family of calculators, made with 3D printing and springs in stainless steel 304 alloy

28.00 *
Old price 35.00 €
In stock

HP 17bII+

Ideal for real estate, finance and business professionals, the HP 17bII+ features a simple keyboard, 250 menu-driven functions, RPN1 and algebraic entry-system logic. Its intelligent menu system allows you to concentrate on the problem, not on the calculator. 

After more than 20 years and 3 versions with different processors, its unsurpassed function set and user friendliness keeps the HP17bII in the to echelon of financial calculators.

99.90 *

New HP 10bII+

Product no.: NW239AA

Get the answers you need quickly with the easy-to-learn and use HP10bll+ Financial Calculator. Whether you are a student or a practicing professional, the HP 10bll+ makes it easy to solve business, financial, statistical, and math calculations accurately and quickly, at a price that everyone can afford. The design packs plenty of features to make your work less complicated.

29.90 *

HP41 overlays

Product no.: HP41cOverlay
English 10.00 *
In stock

New Set of 4 screw for HP41 - inox

Product no.: Screwset

Two long screw for the lower screw posts of HP41c calculators + two long screws for upper posts.

3.00 / 4 piece(s) *
In stock

lower post long screw - inox

Product no.: lowerscrew

Two long screw for the lower screw posts of HP41c calculators

1.00 / 2 piece(s) *
In stock

lower post long screw - black pair

Product no.: lowerscrewblack

Two long screw for the lower screw posts of HP41c calculators - black

4.00 / 2 piece(s) *
In stock

Feet for HP41c HP41cv HP41cx calculators - set of 4

Product no.: feet41c

Adhesive black silicone feet for HP41c HP41cv HP41cx calculators

4.00 / 4 piece(s) *
In stock

12c Platinum Financial Calculator

More powerful and capable than ever, the HP 12c Platinum is up to 6 times faster with 4 times more memory than the original HP 12c. (the current HP 12c in this shop is a new model based in the ARM processor which is 25 times faster than the HP 12c Platinum) However, it takes up to 399 program lines, compared with just 99 of the plain 12c model.

Choose between RPN1 or algebraic entry-system logic, handle up to 80 cash flows and utilize over 130 built-in functions.

Now with the option of true leather case! (in addition to the original case)

 

89.90 *

New HP10s+

Product no.: NW276AA

User-friendly design, easy-to-read display and a wide range of algebraic, trigonometric, probability and statistics functions for your Math and Science classes

 

Not available anymore - until new production comes

20.00 *

New Upper Post Repair part

Product no.: UpperPostRepair

Piece to repair HP41c series upper screw posts (tested with both fullnut and halfnut versions)

16.00 *
In stock

New HP41c Lower Post Repair Kit

Product no.: Lower Post Repair Kit

Set of pieces needed to repair successfully the lower posts of HP41C, 41CV and 41CX full nut calculators, including zebra connectors, lower post part, and keyboard support for clothes' pegs to protect the keyboard

40.00 *
Old price 70.00 €

Piece for repair of back case of HP41C

Product no.: brokenback

1 Piece for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.

 

14.00 *
In stock

Battery LR44 for HP12c old, HP17bII - set of 3

Product no.: LR44

LR44 battery for calculators of Voyager series (HP10c, HP11c, HP12c old, HP15c and HP16c) and Pioneer series (HP10b, HP17bII, HP42s, HP27s)

3.00 / 3 piece(s) *
In stock

New zebra connector holder

Product no.: zebraholder

Zebra Holder to keep the elastomeric zebra connectors in the contacts between main board and processor circuit in the HP41c calculator family, full nut versions.

12.00 *

New Lower Post Repair part

Product no.: Lowpostrepair

Piece to repair HP41c full nut series lower screw posts

16.00 *
In stock

New HP41c Port cover - original

Product no.: Port cover

HP41c back port cover - original and used.

15.00 *

New Repair kit for HP-41c battery bay and expansion ports

Product no.: Flex-PCB

Adhesive circuit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price.

26.00 *
In stock

Repaired HP41c back side

Product no.: HP41Cback

Repaired back side of HP41c. It can be used in case the original backside has the screw supports broken.

40.00 *
In stock

4 x Piece for repair of back case of HP41C

Product no.: brokenback4

4 pieces for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.

 

50.00 *
Old price 72.00 €
In stock

New Firmware Flashing service for HP30b, HP20b

Product no.: Flash

We offer the flashing of new firmware for the 10bII+, 12c+, 20b and 30b.

These calculators have a port that allows the user to flash a new firmware. For that, a special cable is needed.

30.00 *

New HP 17bII - Pioneer series battery bay

Product no.: back cover Pioneer

Pioneer series battery cover: HP10b, HP14b, HP17bII, HP42s, HP27s,HP22s, HP32sII

25.00 *
In stock

HP Charger

HP Original charger in excellent shape, valid for HP41c, HP67, HP92, HP97, and printers HP82162A (HP-IL) and HP82143A

40.00 *
* Prices include VAT