Calculator Repairs

Old electronic calculators are classics, worth to keep and worth to use, but they have their ailments, due to age and wear. Some calculators --notably Hewlett-Packard's-- are so much of classics, that they are still sought after. So even twenty year old models in good conditions are traded for way beyond 100 Euros/Dollars.

But we are sportsmen, aren't we, and so the hunter-gatherer in us chases after defect classics on ebay, and then on a cold winter evening we sit down with our tools and torture a seemingly dead circuit, to rekindle the fire in its LEDs. Here are a few stories what I did to some of my calculators, for better or for worse.

• HP 41C: A hefty refurbishment
• HP 11C: To boldly go, where no one went before...
• HP 48SX: Full head transplant
• TI 59: My calculator has a gear box!!
• TI 58/59: Pack/unpack the Battery Pack

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