[NTLK] 2000 not switching on

[Michael Sheflin]

Any chance you could put some pics up on Flickr?

On Tue, Sep 7, 2021, 5:03 PM Rob Moody <robmoody at fundamental-learning.com>
wrote:

> Hi Michael,
> Yes I did open the case and removed the rear cover so I could get a better
> look at the battery bay….while there was a bit of green oxidation around
> that uniquely Newton designed battery terminal…which I removed with
> vinegar….there seemed to be no obvious signs of oxidation on the board
> itself…but I did not go any further for fear of breaking something…but an
> interesting thing was that I hadn’t noticed before that the board had a
> funny “Q” like symbol and an image of a Newton “Newt” on it plus a “2001”
> sticker inside the port bay…
>
> Sent from my iPhone
>
> > On 7 Sep 2021, at 20:10, Michael Sheflin <sheflinm at gmail.com> wrote:
> >
> > And there's no backup battery; my mistake.  Could oxidation on the logic
> > board cause a short?  If it were a capacitor/degradation issue, I would
> > expect a wonkier result.  My 120 briefly started displaying random blocks
> > on the screen but then reverted after several days unpowered (which I'd
> > guess is the beginnings of a capacitor failure).  But not turning on at
> all
> > randomly seems like it might be a short.  And your mention of the heat
> > (/humidity?) might support that.
> >
> > You could try opening just the case (
> > https://www.ifixit.com/Teardown/Apple+Tablet+Teardown/2153) to see if
> > there's any very obvious oxidation on the logic board itself.
> >
> > I mean... just because it's costless...  Have you tried blowing in the PC
> > card slots/maybe wiping very gently with a qtip?  Have you looked in
> those
> > slots for oxidation?
> >
> > Believe it or not, "Scrubbing Bubbles" is pretty good at eating corrosion
> > off of logic boards.
> >
> > Good luck,
> > Michael
> >
> >
> >> On Tue, Sep 7, 2021, 2:09 PM Rob Moody <
> robmoody at fundamental-learning.com>
> >> wrote:
> >>
> >> Hi Michael,
> >> Thanks for the tips. I have tried “pulling down” on the power switch
> while
> >> pressing the Reset button…still nothing.
> >> I have tried all combinations of power switch, reset button, battery
> tray
> >> and power pack…to no avail! In a previous ownership of a 2000 this had
> >> always worked….but this replacement unit seems totally dead!
> >>
> >> Sent from my iPhone
> >>
> >>>> On 7 Sep 2021, at 18:05, Michael Sheflin <sheflinm at gmail.com> wrote:
> >>>
> >>> Oxidation may not be your issue,  fatal.  I've, unfortunately, had
> >>> oxidation at the battery terminals in my working 2100 for years at this
> >>> point.  I have not tried to clean it, though I might reconsider.
> >>>
> >>> I'm not endorsing the following; I kind of doubt this will resolve
> >> things,
> >>> but see:  https://discussions.apple.com/thread/122311. .  Have you
> tried
> >>> screwing with the reset button?  And have you tried screwing with the
> >>> backup battery?  If there isn't one, have you tried putting one in?
> >>>
> >>> Try the power button while holding rest, also.   (But don't delete your
> >>> files when prompted.)
> >>>
> >>> Best,
> >>> Michael
> >>>
> >>>> On Tue, Sep 7, 2021, 11:18 AM Rob Moody <
> >> robmoody at fundamental-learning.com>
> >>>> wrote:
> >>>>
> >>>> Hi there Newtonians, Newt Crew….
> >>>> Well, I’ve made sure that there were no PC Cards inserted (easy, as I
> >>>> don’t have any!) , left the 2000 off power for a couple of
> days…nothing
> >>>> from power supply or AA tray…I even opened up the back plate carefully
> >> to
> >>>> see if I could get into the battery “chamber”….and using a torch I
> could
> >>>> see some oxidation…so I carefully brushed vinegar around the terminals
> >> and
> >>>> left it to dry (bit of a heat wave here at the moment!)….but still no
> >>>> boot!  I didn’t want to go any further into the 2000’s innards for
> fear
> >> of
> >>>> breaking something….
> >>>> Any help appreciated!
> >>>>
> >>>> Sent from my iPhone
> >>>>
> >>>>> On 5 Sep 2021, at 06:18, Grant Hutchinson <
> >> newtontalkmessages at gmail.com>
> >>>> wrote:
> >>>>>
> >>>>> 
> >>>>>> On Aug 31, 2021, at 5:36 AM, Rob Moody <
> >>>> robmoody at fundamental-learning.com> wrote:
> >>>>>>
> >>>>>> Also sent an email to Frank via his site (as he was so helpful to me
> >>>>>> many years ago) but haven’t heard back…is he okay and doing well?
> >>>>>
> >>>>> Hey Rob ... it’s great to see you on the list again. Sorry that
> you’re
> >>>> having issues with your new MP2000. As far as we know, Frank is still
> >>>> around and well ... just not active on the list every day.
> >>>>>
> >>>>> I’m sure we’ll get you fixed up.
> >>>>>
> >>>>> g.
> >>>>>
> >>>>>
> ----------------------------------------------------------------------
> >>>>>
> >>>>> Grant Hutchinson
> >>>>> NewtonTalk List Dad & Interweb Custodian
> >>>>>
> >>>>>
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> >>> http://twitter.com/newtontalk
> >>
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