Cancel/ON button - HP 48G strange problem - PLEASE help me
Luciano Enzweiler
"Cancel" button (the ON button) stopped working. I can turn it on, but
when I try to use this button, it simply doesn't work. If you have any
idea of what can I do, please tell me. I'll describe exactly what
happened and what I've already tried.
What happened....
I used the calc. the last time in the morning. In the afternoon, when
I tried to turn it on, it simply didn't. I took out the batteries,
reseted, but nothing. After sometime though, it did turn on, but when
I pressed the cancel button, it didn't work (for example: press number
1 and press the Cancel/ON button - it should disappear, but it
doesn't). Every single thing works just fine, the serial
communication, beep, calculations, etc. The only thing is that
Cancel/ON button. The button itself is working, because I can turn on
the calc. and when I press and hold it and, for instance, digit "556",
it doesn't appear on the display, just when I release the Cancel/On
button.
Strange. I can't turn the calc. Off by pressing shift ON, because it
doesn't work. No probs, I write "OFF" and press Enter and it turns
Off. But when I press the ON button, the HP doesn't turn on, only if I
hold it by aprox. 5 seconds or if I wait some hours (can it be a
capacitor??? Witch one??).
One of the most weird thing is that, I don't know why, after I did
lots of things, it started working just fine, I could turn it on and
off repeatedly, cancel and so on, just OK. But, on the other day it
stopped working again and since then (Friday July, 12 2002) it came
this way again.
What I tried....
I opened the HP (very hard job, I should say), took out the batteries,
reseted the calculator with the reset button (I can't use "ON+A+F")
and I even try to (after take out the batteries) short cut the
capacitor that holds RAM while you change batteries. It asked me to
try to recover memory, I pressed NO, and so on.
So, it's too weird for me. Everything works but the Cancel/ON button,
except to turn the HP on and just after some hours or holding it for
more than 5 seconds. If you've ever seen it or have any idea, PLEASE
tell me.
My e-mail is maxi...@ig.com.br or enzw...@biosys.net
Thanks in advance,
Luciano Enzweiler
r. d. bärtschiger.
key or something else?
rdb.
Veli-Pekka Nousiainen
You should press just under the LCD to use the [ON].
Since you have already opened the calculator, try to get pressure
in the area between the LCD and the top row of keys.
In the future you may also loose control of the shift keys
and finally also the alpha key will be dead.
VPN - buy a 49G, it has different, more reliable keyboard system
"Luciano Enzweiler" <maxi...@tutopia.com.br> wrote in message
news:8b7627f0.02071...@posting.google.com...
Luciano Enzweiler
> Did you try running the built-in keyboard test to verify if it is the
> key or something else?
>
> rdb.
Yes, I did try it during that moment it started working again (because
you have to press ON+D) and everything was working fine. But then it
stopped working again. The button seems to be working because when I
hold it the other commands are stopped until I release it.
Thanks anyway,
Luciano Enzweiler
Raymond Hellstern
"Veli-Pekka Nousiainen" <DROP...@welho.com> schrieb im Newsbeitrag
news:CZlY8.2439$x51.7...@reader1.news.jippii.net...
> This is a rare fault in the old HP 49G series.
> You should press just under the LCD to use the [ON].
> Since you have already opened the calculator, try to get pressure
> in the area between the LCD and the top row of keys.
> In the future you may also loose control of the shift keys
> and finally also the alpha key will be dead.
>
Where is the relation between your answer and the original question?
The subject says he has an HP-48G, not a 49...
> VPN - buy a 49G, it has different, more reliable keyboard system
>
LOL;-)
Raymond
Veli-Pekka Nousiainen
> > This is a rare fault in the old HP 49G series.
> > This is a rare fault in the old HP 48G series.
VPN
"Raymond Hellstern" <Raymond....@T-Online.de> wrote in message
news:agt27b$4qh$06$1...@news.t-online.com...
Steve Sousa
> You should press just under the LCD to use the [ON].
> Since you have already opened the calculator, try to get pressure
> in the area between the LCD and the top row of keys.
If this solves your problem, search google for "twisty" ...
Steve Sousa
Veli-Pekka Nousiainen
only to find out later that the pressure trick works,
but eventually the 48G will die anyway
so it's good to have a spare
AND
one may search google for Steve's tip
Thanks Steve!
Veli-Pekka - out on a VOCATION !!!
"Steve Sousa" <ets...@yahoo.com> wrote in message
news:e726e217.02071...@posting.google.com...
kin...@gmail.com
Oddly enought, pressing the area above the top buttons worked just fine!
Maybe I should try opening it up?
Cheers!
Marcelo