|Re: Help my 41C|
Message #8 Posted by Perry Arnett on 26 Mar 2000, 6:10 p.m.,
in response to message #7 by Perry Arnett
I failed to mention that it appears that there is a capacitor in the 41 such that when fully discharged takes charging to reactivate. what this means is that sometimes, putting a fresh pack of batteries in will NOT instantly bring the machine back to life;
insert and remove the fresh battery pack a number of times while toggling the ON and USER switch;
more likely than not, at some point the display will activate, usually "Memory Lost", and the machine is back among the living.
I don't know the power design or circuitry of the machine, but what I've described works, and seems to be a reasonable explanation based on messing with them since 1984.
it appears that it is the act of repeatedly energizing and removing power to the capacitor that finally brings the machine to life; sometimes, even, when it has come back to life after a long sleep, it will go dead again soon, so one has to try the repeated energizing and removing power until the machine finally stays awake.
if nothing else works, send it to me and I'll be happy to see what I can do