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Re: HP 200LX does not work after changing batteries

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On Fri, 13 Aug 2021 09:24:08 -0700 (PDT),
  Richard Pennenga <dweenpennenga@gmail.com> wrote:
>  On Wednesday, April 9, 1997 at 3:00:00 AM UTC-4, HANK KESSLER wrote:
> > I remove the batteries regularly from the HP and don't have 
> > reset or powerloss problems. Something else must be wrong with 
> > that unit. I have used alkaline, litiums and nickel metal 
> > hydrides. I run the unit till I get a low battery warning. I 
> > turn off the HP, remove the old batteries and replace with new 
> > ones. No loss of data. Maybe the coin cell was not good or not 
> > in contact. In addition, one should never pull all the 
> > batteries. A hard reset is the method to restore the HP - 
> > press all at once - Ctrl-left shift-ON and answer NO to the 
> > question on initialization.
> 
>  I grant that this is a really-old post, but I feel sad.  I 
>  found my HP200LX after having lost it for quite a few years.  
>  It seemed to be lifeless.  Yesterday I was following some 
>  instructions - I had pulled out the button cell (left it out), 
>  pulled out the two alkaline batteries, and then inserted 
>  brand-new alkaline batteries.  I saw the initial prompt flash 
>  onto the screen, stopping with the "initialization" prompt - 
>  and then in a moment, a fraction of a second, the screen went 
>  blank.
> 
>  I tried removing and re-inserting the alkaline batteries with 
>  the button cell out - no action.  I tried WITH the button cell 
>  in place - no action.  I tried the Ctrl-left shift-ON 
>  combination - no action.
> 
>  Is my device dead?

Hmmm, not sure.  I think the procedure might be to hold down a 
key (like the power key) for a period of some seconds while 
all batteries are out to discharge any capacitors before putting 
batteries back in, but could be wrong.

Believe it or not, there are still HP 200LX users on a list, you 
could try here:

http://lists.hp200lx.net/cgi-bin/mailman/listinfo/hplx

-- 
Ted Heise      <theise@panix.com>       West Lafayette, IN, USA

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Re: HP 200LX does not work after changing batteries Richard Pennenga <dweenpennenga@gmail.com> - 2021-08-13 09:24 -0700
  Re: HP 200LX does not work after changing batteries Ted Heise <theise@panix.com> - 2021-08-13 18:52 +0000

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