Re: Repairing a 67 charger ? Message #2 Posted by Randy on 9 Nov 2006, 9:32 a.m., in response to message #1 by Olivier TREGER
Quote: I have tried to find some info about testing/repairing a HP67 power charger: no success.
You didn't try very hard: Classic charger schematic Thanks to Tony Duell!
The most common classic charger failure is fractured wire(s) at the calculator plug end or where the wire exits the charger body. The charger end is easy to repair, the plug, while it can be done very neatly, usually ends up a disaster on the first attempt. Use of sharp objects required...
Common component failures are the 400 uf capacitior followed by the pnp pass regulator for the charger side. All parts in a classic charger are common 1970's electronics, nothing is HP specific.
Edited: 9 Nov 2006, 9:40 a.m.
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