[NTLK] Tantalum caps

[Zachary McCord]

Tantalum camps don't typically go quietly. There's a lot of chemical
energy in a tantalum. Lab I used to work for, we used tantalums for
buffering switching supplies (which I presume is the same use as the
Newton uses them for), and once or twice people have gotten the
polarity reversed. Big fireball.

On 3/25/11, Forrest <newtonphoenix at mindspring.com> wrote:
> Jay:
>
> An additional note--I also tried swapping in a good capacitor later on...and
> I had the same problem as before. So, it likely does cause other unseen
> damage.
>
> Thanks,
> --Forrest
>
> Sent from my AT&T iPhone 4
>
> On Mar 25, 2011, at 8:04 AM, Forrest <newtonphoenix at mindspring.com> wrote:
>
>> Jay:
>>
>> I've had kind of a similar experience with capacitor C85....
>>
>> http://www.newtonphoenix.org/
>>
>> Look under "Newt Tech", then the "FrankenNewton" entry.
>>
>> Thanks,
>> --Forrest
>>
>> Sent from my AT&T iPhone 4
>>
>> On Mar 24, 2011, at 11:02 PM, jay stainbrook <jaystainbrook at hotmail.com>
>> wrote:
>>
>>>
>>> Hi everybody.
>>>
>>> I got my hands on a dead 2100 for the case and some other plastic
>>> goodies.  But when i took a look at the board, there was an obviously
>>> blown cap (C147).  So I replaced it, thinking it was keeping the Newton
>>> from powering up.  But it stayed dead.
>>>
>>> So now I'm wondering - did my ham fisted soldering/de-soldering mess
>>> something else up?  Is it common for these caps to burst?  Anyone ever
>>> try to fix this?
>>>
>>> It would be kind of neat if this "parts" newton could be made to run.
>>>
>>> Jay Stainbrook
>>>
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