[NTLK] Notephone and OMP/MP100 issues

[..]

Hi,
I am a happy owner of 2100 and 100 and have a question about 100. The one I
have is branded Siemens and was a part of Siemens phone.  Do you know what
battery can be used with this version of 100?
Rgds, John

On Tue, Nov 17, 2020 at 6:54 PM Sylvain Pilet <sylvain at pilet.net> wrote:

> Frank,
>
> Thank you for your clarification on the MP100/H1000. I have a much better
> understanding of the frequent problems with these models. I will make some
> component purchases and get into the business of repairing the units I have.
>
> About the Notephones and their motherboard...
> What do you mean by "a certain degree temperature-related"?
> Do you mean that certain components are too sensitive and if they heat up
> too much they no longer work?
>
>
> Sylvain Pilet
>
> http://message-pad.net
> http://messagepad.no-ip.org:3680 [NPDS Tracker]
>
>
> > Le 15 nov. 2020 à 22:10, NewtonTalk <newtontalk at pda-soft.de> a écrit :
> >
> > I own seven or eight Notephones, most of them complete and in their
> original
> > packaging, and over time I've had three or four from other people on my
> > workbench. They all have the same problem: They don't "hang up" when you
> put
> > the receiver back on the cradle. So the toll office out there thinks your
> > phone call isn't yet finished. That's why you'll never get a dial tone
> for
> > your next phone call unless you temporarily unplug the phone. This
> problem
> > hides in the base unit's mainboard, and it is to a certain degree
> > temperature-related. Most, but not all, Notephones will work fine for a
> > short time if you put them in your fridge for an hour before making the
> > call.
> >
> > Don't waste your time adding the cradle switch to your suspect list. The
> > switch is perfectly OK.
> >
> > At one time I thought I had fixed this problem by replacing some
> capacitors
> > that had leaked, but I was mistaken. This Notephone is now in Sonny's
> > possession, and eventually the problem came back.
> >
> > The Notephone's Newton will quite happily do faxes when you furnish it
> with
> > the correct cable. The problem is that even in Germany a standard German
> > phone cable will not work because Siemens did their own thing cable-wise.
> > You'll have to reverse two wires to make it work. I dimly remember
> there's a
> > further cable change required if you want to make the Notephone run in
> the
> > US, but off the top of my head I'm not sure.
> >
> > The Notephone was never sold with an English OS Newton. Those that are
> out
> > there were all modified by yours truly. They DO look genuine, though,
> > because I not only replaced the mainboards, but also the touchscreens (to
> > get English silk screen buttons) and all decals that are visible to the
> > naked eye. I'm glad to hear that people won't part with their English
> > Notephone for less than a thousand bucks. Always nice to have one's work
> > appreciated :-)
> >
> > The problem with the silent Newton is a completely different cup of tea.
> > This is an problem that eventually befalls every Notephone Newton, OMP,
> or
> > MP100. Normally the Newton only appears to be silent, but isn't. If you
> set
> > the Newton to maximum volume and hold it close to your ear, you normally
> > still hear the sound, albeit very faintly.
> >
> > The reason is a 100uF 4V capacitor that has leaked. If you remove the
> back
> > part of the case, you will (assuming you look at the Newton with the
> battery
> > compartment pointing towards you) find it at the bottom left-hand corner
> to
> > the left of the white fuse. That's close to where the speaker wires are
> > soldered to the board. The capacitor is silver, cylinder-shaped and has a
> > black rectangular "housing" around it. Replace it, and the sound will be
> > like new. Make sure to clean the area around the capacitor with some
> > cleaning fluid after removing the old capacitor and before putting the
> new
> > one in.
> >
> > You'll probably have a hard time getting a 4V capacitor. Higher voltages
> are
> > OK, but make sure the capacitor isn't bigger than the original, otherwise
> > you wouldn't be able to reassemble the bottom case part correctly.
> >
> > While your Newton is open, you should also replace C51 (3.3uF 35V). This
> > capacitor is known to cause display problems that make the Newton
> impossible
> > to use, as Erik Johnson found out about two years ago. This component is
> on
> > the "wrong" side of the mainboard, so you'll need to remove it for the
> > replacement.
> >
> > Taking an OMP/MP100 apart and putting it back together isn't for the
> faint
> > at heart. Some time ago I wrote instructions how to do this. However,
> since
> > these instructions are still missing the required DoPa approval, which is
> > entirely my fault because I'm so darn busy taking care of other issues at
> > the moment, they're not yet available on my website. If you want to have
> a
> > look at the ugly and incomplete draft version, be my guest:
> >
> >
> > <
> https://www.pda-soft.de/scratch/How%20to%20take%20apart%20an%20OMP%20or%20N
> > ewton%20MessagePad%20100.docx>
> >
> > Cheers
> >
> > Frank
> >
> > -- Newton software and hardware at http://www.pda-soft.de
> >
> >
> > ----------------------------------------------------------------------
> >
> > http://newtontalk.net/
> > http://twitter.com/newtontalk
>
>
> ----------------------------------------------------------------------
>
> http://newtontalk.net/
> http://twitter.com/newtontalk