Facit CA1-13

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Repair Info

This calculator was in a very nice condition but totally stuck.  I had another CA1-13 with the same problem: lots of oil and grease which in 40 years or more stuck some parts in the mechanism.  One off the approaches I used was completely dipping the machine in a container, partly filled with a mixture of petrol and  a few percent of thin oil.  I left it there for days, only shaking it now and again.

It took 3 month before finally all parts started moving.  The main reason why it took so long is that some control levers are partly out of sight, making it very difficult to see whether they can freely move.

Once running, both machines worked with complete functionality immediately. They are noisy and vibrate but of the many machines I now own, they belong to the ones that I trust most when demonstrating.

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Starting capacitor 4 uF