31 - 40 of 61 results

38g Serial interface kit user's guide

Product no.: 38g SIK manual Windows

In stock

15.38
Price includes VAT


Available delivery methods: Courier Spain, Courier Zone 1, Courier Zone 2, Courier Zone 3, Courier Zone 4, Entrega Canarias/Baleares, Entrega gratuita España

Additional product information


Browse these categories as well: Accessories and spares, Documents, Books

Memory module for HP41c - USED

Product no.: HP Memory

Not in stock

15.00
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega gratuita España

Memory for HP41c calculators (64 registers)

Additional product information

Handbook Download

Customers who bought this product also bought

HP41c battery holder spring
3.00 *
Financial Pac for HP41c - USED
45.00 *
Feet for HP41c HP41cv HP41cx calculators - set of 4
4.00 / 4 piece(s) *
Zebra + Lower post
26.00 *
Assembled HP-41c battery bay and expansion ports module
44.00 *
Piece for repair of back case of HP41C
17.00 *
* Prices include VAT

Browse these categories as well: Accessories and spares, Classic Calculators, The HP41 Corner, HP_41c_Modules

Quad Memory module for HP41c - USED

Product no.: HP Quad Memory

Not in stock

30.00
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega gratuita España

Quad Memory for HP41c calculators (256 registers)

Additional product information

Handbook Download

Customers who bought this product also bought

Feet for HP41c HP41cv HP41cx calculators - set of 4
4.00 / 4 piece(s) *
Spice Battery holder 3D
25.00 *
Woodstock Battery holder 3D
28.00 *
* Prices include VAT

Browse these categories as well: Accessories and spares, Classic Calculators, The HP41 Corner, HP_41c_Modules

Full-nut processor

Product no.: Fullnut-C

Waiting for new units

Notify on availability
15.00
Price includes VAT
Available delivery methods: Light package, Shipping small items region 2, Entrega Canarias/Baleares, Overseas traceable, Entrega gratuita España

Full-nut processor - please select C or CV type, or installation in your machine.

C-type comes with 65 memory registers.

CV-type comes with 319 memory registers

Installation requires that the customer supplies a working machine

Additional product information


Customers who bought this product also bought

Feet for HP41c HP41cv HP41cx calculators - set of 4
4.00 / 4 piece(s) *
HP41c side cover
6.00 *
Zebra connector for HP41C repair
12.80 *
Battery holder 3D
30.00 *
Upper Post Repair part
16.00 *
Assembled HP-41c battery bay and expansion ports module
44.00 *
* Prices include VAT

Browse these categories as well: Accessories and spares, Classic Calculators, The HP41 Corner
New

Lower Post Repair part

Product no.: Lowpostrepair

In stock

16.00
Price includes VAT


Available delivery methods: Courier Spain, Courier Zone 1, Courier Zone 2, Courier Zone 3, Courier Zone 4, Light package, Shipping small items region 2, Entrega Canarias/Baleares, Overseas traceable, Letter, Entrega gratuita España

Lower Post repair

Material needed

  • Lower post repair piece
  • Clothes' peg
  • Keyboard support for clothes' pegs

Let's assume that both posts are broken or cracked. The effect of this cracking is that the screws do not do their job. Usually, using longer screws may help, but this typically is short lived since the cracks will continue downwards. Once the pressure between both halves is softened, the calculator doesn't work anymore. The solution is to repair the broken posts. 

Old methods to repair broken post is to glue them (but this doesn't hold together too long) and to tie them down with very small gauge copper cable, applying pressure so that it holds together. This may solve some cases, but not when the screw path has been destroyed - maybe due to strong tightening of the screws.

Other repair methods have been proposed, including drilling down the screw and placing in its place a cylinder with screw path, glued in place. We tried this method but there was a problem: the torque used to screw resulted in cracked glue and the cylinder separating from the substrate - every time.

Our method was devised with three goals in mind:

  1. Try to avoid the torque from the screw forcing on the glue with the substrate
  2. Try to ensure that the front part of the calculator is pulled up when screwing the back side on.
  3. Try to be compatible with all known zebra connectors - including our own.

The piece that we have designed requires drilling the old posts to the keyboard ciruit level, taking care of leaving the hole clear. The design on the piece is such that the pin will be glued to the inner part of the rest of the screw post; and the surface of the piece can be glued to the keyboard circuit, so that the torque on the substrate is avoided (it also helps that torque is also resisted by the other post, when using the full piece)

ZPN_foto_v2

 

When gluing the piece, there are several precautions that need to be taken:

  • Be sure of covering the zebra circuit part with tape -we don't want the glue to cover it.
  • Cover also all nearby pin holes of the keyboard. If glue comes into one such hole, the key will not register. In severe cases, the key will be down all the time, glued in place!
  • When you position the piece, make sure of using some pins through the holes to make sure the piece is well centered and the screws can go through.
  • When applying pressure, use clothes' pegs to hold the piece in place, preferably on the outer side.
  • To avoid pushing the keyboard down, and only push down the front of the calculator, use the keyboard cover we have designed to support the pegs. Pushing the keyboard instead will result on separation between both halves of the calculator, since the attachment of the substrate to the pin will be at a lower level (the keyboard is linked to the keyboard circuit, not to the substrate)
  • Use epoxy glue, type Araldit. 
  • Let it cure overnight.
  • Remove the tape over the zebra circuit path
  • Place the zebra connectors
  • Assemble the calculator and test.

We recommend to repair both posts at the same time. However, if you are confident on the resistence of the other post, you can cut the piece in two. As it is symmetrical, it can be used for both posts, just twisting it 180º. Using the full piece, the other post side does not need to be glued - the torque resistence is done by the post itself over a much longer distance.

Additional product information


Accessories

Product Note Status Price
Keyboard support for repairs Keyboard support for repairs
25.00 € *
Spacer set for repairing old HP41c Spacer set for repairing old HP41c
10.00 € *
* Prices include VAT
Display accessory details

Customers who bought this product also bought

Upper Post Repair part
16.00 *
Piece for repair of back case of HP41C
17.00 *
Feet for HP41c HP41cv HP41cx calculators - set of 4
4.00 / 4 piece(s) *
Assembled HP-41c battery bay and expansion ports module
44.00 *
Repair kit for HP-41c battery bay and expansion ports
22.00 *
Zebra connector for HP41C repair
12.80 *
* Prices include VAT

Browse these categories as well: Accessories and spares, The HP41 Corner, Home, HP 41C Repair, Broken lower screw posts

Keyboard support for repairs

Product no.: keyboard support

In stock

25.00
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega Canarias/Baleares, Overseas traceable, Entrega gratuita España

Piece required for the lower post repair of HP41c calculators.

To avoid the spanners to press on the keyboard keys and ensure that the front part of the calculator is pressed agains the repair piece.

Designed for the second row of lower keys.

Additional product information


Accessories

Product Note Status Price
Lower Post Repair part Lower Post Repair part
16.00 € *
* Prices include VAT
Display accessory details

Customers who bought this product also bought

Lower Post Repair part
16.00 *
Upper Post Repair part
16.00 *
Piece for repair of back case of HP41C
17.00 *
Feet for HP41c HP41cv HP41cx calculators - set of 4
4.00 / 4 piece(s) *
Set of 4 screw for HP41 - inox
3.00 / 4 piece(s) *
Assembled HP-41c battery bay and expansion ports module
44.00 *
* Prices include VAT

Browse these categories as well: Accessories and spares, The HP41 Corner, HP 41C Repair, Broken lower screw posts

Battery LR44 for HP12c old, HP17bII - set of 3

Product no.: LR44

In stock

3.00 / 3 piece(s)
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega Canarias/Baleares, Entrega gratuita España

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

Not valid for the new HP12c with two batteries (with wide battery cover), HP Platinum o HP15C Limited Edition. These work with CR2032 batteries.

Additional product information


Customers who bought this product also bought

HP12C battery cover
9.00 *
Battery holder 3D
30.00 *
HP41c battery holder spring
3.00 *
Feet for HP41c HP41cv HP41cx calculators - set of 4
4.00 / 4 piece(s) *
HP12C battery cover - new model
16.00 *
* Prices include VAT

Browse these categories as well: Classic Calculators, Accessories and spares, Home
New

HP 17bII - Pioneer series battery bay

Product no.: back cover Pioneer

In stock

25.00
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega Canarias/Baleares, Entrega gratuita España

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

Additional product information


Accessories

Product Note Status Price
Repair kit for HP-41c battery bay and expansion ports Repair kit for HP-41c battery bay and expansion ports
22.00 € *
HP41c side cover HP41c side cover
6.00 € *
* Prices include VAT
Display accessory details

Customers who bought this product also bought

Full-nut processor
from 35.00 *
Battery holder 3D
30.00 *
* Prices include VAT

Browse these categories as well: Accessories and spares, Classic Calculators, Home

Navigation Pac for HP41c - USED

Product no.: HP Navigation Pac

Not in stock

60.00
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega gratuita España

Navigation Pac for HP41c calculators 

Additional product information

Handbook Download

Browse these categories as well: Accessories and spares, Classic Calculators, The HP41 Corner, HP_41c_Modules

Math Module

Product no.: MathPac

In stock

40.00
Price includes VAT


Available delivery methods: Light package, Shipping small items region 2, Entrega Canarias/Baleares, Entrega gratuita España

Math Module for HP41c

Additional product information


Customers who bought this product also bought

Stat Module
45.00 *
HP41c battery holder spring
3.00 *
HP41 overlays
from 25.00 *
HP41c side cover
6.00 *
Battery holder 3D
30.00 *
HP41c Port cover - 3D
19.20 / 4 piece(s) *
* Prices include VAT

Browse these categories as well: Accessories and spares, Classic Calculators, The HP41 Corner, HP_41c_Modules
31 - 40 of 61 results