Repairs

Contents:

• Repairing It Yourself
• Having Someone Else Repair It

Repairing It Yourself

• Disassembling HPs.(brief instructions for most models)
• Batteries
  • Information on HP batteries, and chargers.
  • HP Charger Data
  • Classic Charger Schematic
  • Information on disposable batteries.
  • Replacement Nicads for HP Battery Packs.
  • Recovering shorted battery packs.
  • Building a classic battery pack from scratch
• HP 9810/9820 Card Reader Drive Wheel Repair
• Classic Series (HP-35, 45, 46, 55, 65, 67, 70, 80, 81, 91, 92 97)
  • HP 35 internals
  • HP 45 Internals
  • HP-46 Printer Repair Tip
  • HP 55 Internals
  • HP 65 Internals
  • HP 65 card reader tips: reinforcing the worm gear clutch
  • HP 67 Internals
  • HP-65 HP-67 HP-97 "Clutch" Fix
  • Repairing the HP-67
  • Repairing the HP-67 Card Reader
  • Repairing the HP-97 Card Reader
  • HP-67 / HP-97 card reader repair hints (wheel & clutch)
  • HP-97 printer ribbon repair
  • HP-97 Printer Gear Replacement
  • Classic Charger Schematic
  • Repairing pre-recorded cards for HP-65, 67, 97
  • How to Fix Classic Models
  • Removing the back labels to HP classic series calculators
• A Common Woodstock Problem and Repair Suggestions
• HP-19C printer overhaul discoveries
• Spice Service Tips (HP-31E, 32E, 33E/C, 34C, 37E, 38E/C)
• HP-41 Series and Peripherals
  • Repairing an HP-41CX
  • Resetting an HP-41C
  • Repairing the HP 82104A Card Reader. (For the HP-41C.)
  • HP 41C Card Reader Repair
  • HP 9114 repairs
• Pioneer Repairs
• ElectroStatic Discharge: a possible solution for the HP48
• Opening a Voyager (HP-10C, 11C, 12C, 15C, 16C)
• For parts or manuals, try HP at: (800) 227-8164 or try the classified ads.
• For more help, try the HP Forum.

Having Someone Else Repair It

If you need someone to make repairs for you, you can try:

• Don Orourke at International Calculator in Florida at 407-671-1991 or INTLCALC@AOL.COM repairs HP-41Cs and HP82104A card readers, as well as chargers and batteries. He also has HP-41s for sale along with software and peripherals.
• Randy Sloyer at www.fixthatcalc.com for repairs on most HPs made in the last 20 years or so. However, Randy's site says that he is having health issues and not accepting new work at this time.
• For calculators that are still under warranty, please contact HP.

For battery work specifically, you can also try:

• Mark Hoskins at Waterhosko@aol.com or 630-372-7656 repairs/sells/rebuilds Classic batteries and 4-cell subC HP battery packs.
• The Battery Station Has a good variety of batteries at good prices.
• Batteries Plus. Many U.S. locations including: Arizona at 800-677-8278 and South Dakota at 800-362-9833. Battery pacs are sometimes repaired while you wait. A recent repair of an HP-41C pac cost $12.
• Battery Works at 800-707-7000
• International Calculator Sales in Florida at 407-671-1991 or INTLCALC@AOL.COM.
• TNR Technical Inc at (800) 490-8418
• Mille Et Une Piles at 34 rue Delambre, 75014 Paris, France
• Hobby stores such as Tower Hobbies and Horizon Hobby often have extensive catalogs of batteries.

The Museum has not used any these services and can't recommend one over the others.

Go back to the main exhibit hall