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echo: classic_computer
to: GREG EASTHOM
from: BOB KLAHN
date: 2005-12-27 12:46:00
subject: Zenith 386-25 question

DC>>  PBA> Alot of those old computers had a big capacitor instead
of a battery.
DC>>  PBA> If the  cap goes bad just solder in a similar one.


DC>> Soldering is not something I do well...

 GE> Might not have to.
 GE> 386/486 usually had a rechargeable battery next to the
 GE> keyboard socket. About the size of your last pinkie joint,
 GE> looks like it's wrapped in heat-shrink, maybe green or blue.
 GE> One big terminal on each end, so there's no precision work
 GE> to do. Occasionally there's a "ext-batt" multi-pin header
 GE> nearby. If so you can just cut off the rechargeable and plug
 GE> in an external battery pack. Radio shack to the rescue!

 Sometimes they are lithiums. Same basic principle.

BOB KLAHN bob.klahn{at}sev.org   http://home.toltbbs.com/bobklahn

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