Hp-41C card reader - dead
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04-22-2022, 10:42 PM
Post: #63
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RE: Hp-41C card reader - dead
I bought a used card reader recently, and as it happens I managed to repair it just today!
It had the usual problems. At first, I thought I can get away with replacing the deteriorated rubber on the capstan, but this resulted in checksum errors and malfunctions. In the end I had to superglue the silicon tubing (I went with this solution) and the tiny aluminum sleeve on the worm wheel and motor shaft. Problem solved I am skeptical that more elaborate solutions with thin cable insulations to mount the worm wheel would provide any significant dampening effect to justify the efforts. But I can definitely report that a rock solid mounting of the o-rings/tubing to the capstan and of the worm gear to motor shaft is mission critical for the card reader to work. Best, odo |
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