[NTLK] Newton 2100 on batteries only freeze with ATA or 3rd party linear cards

Thu Jul 26 10:54:31 EDT 2018

Thanks Elias,

I will try replace them. I have no problem with soldering even smaller elements. I have access to SMT equipment, so shouldn’t be any problem. The problem is a lack of tech/service documentation for Newtons (electrical diagrams etc.). I wonder if Apple could give us something, if we ask as a Newton Community…

Cheers,
Pawel

> On 26 Jul 2018, at 14:27, Elias Basse <kd5jfe at gmail.com> wrote:
> 
> My suggestion would be to test the tantalum surface mount capacitors with a capacitance multimeter and verify against the values written on the cases (it appears that there are four on the right and one on the left).
> 
> I have had capacitor issues when a circuit board is stored in non ideal temperatures and have had to replace them.  While surface mount capacitors are difficult to solder, they are replaceable and inexpensive (30-50 cents is average) I stick with name brands like nichicon or tyco.
> 
> It appears that they are 100uf variety (yellow component).
> 
> Best Regards,
> Elias
> 
> Sent from my iPhone
> 
>> On Jul 26, 2018, at 7:44 AM, Sylvain Pilet <sylvain at pilet.net> wrote:
>> 
>> Vladislav,
>> 
>> It may be that, but who knows where this capacitor is?
>> Below, a capture of the motherboard of an MP2000 (source image: ifixit).
>> 
>> http://message-pad.net/Download/Documents/Newton-Doc-Spec/Source-iFixit/MP2000BOARD-iFixit1.jpg
>> http://message-pad.net/Download/Documents/Newton-Doc-Spec/Source-iFixit/MP2000BOARD-iFixit2.jpg
>> 
>> 
>> 
>> Sylvain Pilet
>> 
>> NPDS | Newton Personal Data Sharing 
>> http://messagepad.no-ip.org:3680 (TRACKER)
>> http://messagepad.no-ip.org
>> 
>> http://message-pad.net
>> https://www.facebook.com/message.pad.net
>> https://twitter.com/MessagePad_net
>> https://www.instagram.com/applenewtonmessagepad_fan
>> 
>>> Le 26 juil. 2018 à 13:42, Vladislav Korotnev <vladkorotnev at gmail.com> a écrit :
>>> 
>>> Only one slot, only on batteries, only non standard cards and intermittent behavior? Sounds like a degrading capacitor issue to me IMO
>>> 
>>> // Ak.R.
>>> 
>>> iOS/Mac/Windows & Web developer
>>> Vaporwave/ambient producer, sound/video engineer
>>> 
>>> Genjitsu Gadget Lab Member 001
>>> http://genjit.su
>>> 
>>> Sent from my iPhone
>>> 
>>>> On 26 Jul 2018, at 17:45, Piotrowski Paweł (Newton) <newton at indigi.co.uk> wrote:
>>>> 
>>>> I thin I just ruined my Newton ;(
>>>> 
>>>> This problem occurs on upper pcmcia slot only.
>>>> 
>>>> 
>>>> 
>>>>> On 26 Jul 2018, at 11:31, Piotrowski Paweł (Newton) <newton at indigi.co.uk> wrote:
>>>>> 
>>>>> Hi Newtons,
>>>>> 
>>>>> I play a little with one of my Newtons 2100. What I discover today is that if I work on AA batteries only (new ones, indicator shows me 90%), and I try use ATA memory cards or non-Apple linear memory cards (in this case was 20MB card), my Newton just freeze very bad. Even reset button is not working. The only option is to remove batteries.
>>>>> 
>>>>> What is interesting:
>>>>> 
>>>>> - when I use power adapter, all cards working fine
>>>>> - this problem is with memory cards only - WiFi card working fine on batteries only
>>>>> - I thought that ATA driver making problem, but no. Newton have freezing problem on batteries even after total wipeout (power+reset and erase all data procedure)
>>>>> 
>>>>> Any ideas and conclusions? I’m asking, because I could understand ATA card causing problems. But linear cards?
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> Best regards,
>>>>> Pawel Piotrowski
>>>>> 
>>>>> Worldwide Apple Newton Users Map: http://user-map.applenewton.co.uk <http://user-map.applenewton.co.uk/>
>>>>> 
>>>>> NPDS Server: http://newton1.applenewton.co.uk:8079 (powered by Newton 2100)
>>>>> NPDS Tracker Server: http://tracker.applenewton.co.uk:3680 <http://tracker.applenewton.co.uk:3680/> (powered by Raspberry Pi)
>>>>> 
>>>>> Facebook: https://www.facebook.com/applenewtonfan/ <https://www.facebook.com/applenewtonfan/> 
>>>>> Instagram: https://www.instagram.com/AppleNewtonFan/ <https://www.instagram.com/indigi_newton/>
>>>>> Twitter: https://twitter.com/AppleNewtonFan/ <https://twitter.com/indigi_newton/>
>>>>> ----------------------------------------------------------------------
>>>>> 
>>>>> http://newtontalk.net/
>>>>> http://twitter.com/newtontalk
>>>> 
>>>> ----------------------------------------------------------------------
>>>> 
>>>> http://newtontalk.net/
>>>> http://twitter.com/newtontalk
>>> ----------------------------------------------------------------------
>>> 
>>> http://newtontalk.net/
>>> http://twitter.com/newtontalk
>> 
>> ----------------------------------------------------------------------
>> 
>> http://newtontalk.net/
>> http://twitter.com/newtontalk
> ----------------------------------------------------------------------
> 
> http://newtontalk.net/
> http://twitter.com/newtontalk