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Re: Toshiba A200 series Proadalizer

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In message <XnsA3C23EC6DF322CSKJHNMW985780A@94.75.214.90>
          Computer Nerd Kev <not@telling.you.invalid> wrote:

> For anyone else like me who was wondering what a Proadlizer is
> and who they should use one on, it turns out it's an IC with a
> lot of filter capacitors inside:
>
> http://www.nec-
> tokin.com/english/product/proadlizer/outline.html
>
> Anyway, some aspect of the power control circuitry must be
> getting confused by noise on the power input which the
> Proadlizer capacitor is meant to filter out. I guess turning
> ACPI off  prevents this messing up more important functions.
>
> In any case there must be something up if a new one of these
> Proadlizer capacitors went in the space of a few months.
> Perhaps your power supply is making voltage spikes on the DC
> output? If so, it won't be doing the other components much
> good either, especially now that the Proadlizer is broken
> again.
>
> If you (or someone you know) have an Oscilloscope, take a look
> at the DC output from your power supply (preferably while it's
> powering the laptop) and look out for said voltage spikes.
> Otherwise, you might want to buy another power supply just to
> be safe.
>

I have had three different 19v supplies, one a large capacity
HP supply, and didn't get any variation. I understand that it takes a
high end scope to pick up the type of spikes that can cause trouble to a
cpu anyway.

It seemed to me that it was just a case of wether the power
was coming from the 19v-in or the battery. I may have to rig up a pure
19v supply with batteries before that is conclusive, It would at least
prove it is the spikyness of a psu in combination with acpi as the
cause as opposed to dodgy acpi switched circuitry.

I have spent quite a few trouble free hours with acpi=off,
but maybe I should try some diagnostic that can give it
a real workout.

I'm also wondering if the weak battery could also be
contributing. The laptop will only run for about 20mins
on the battery alone.

Oher series dual core laptops dont seem to be prone to this
condition, Could it be possible that they have a bad or failing
design in the acpi affected circuitry? I'm not sure exactly
what this monitoring circuitry is yet.

Hopefully I'll narrow it down, and report back my findings.

Ron M.

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Toshiba A200 series Proadalizer Ron <beeb@woosh.co.nz> - 2014-10-08 11:34 +1300
  Re: Toshiba A200 series Proadalizer Computer Nerd Kev <not@telling.you.invalid> - 2014-10-10 06:10 +0000
    Re: Toshiba A200 series Proadalizer Ron <beeb@woosh.co.nz> - 2014-10-11 12:30 +1300
      Re: Toshiba A200 series Proadalizer Ron <beeb@woosh.co.nz> - 2014-10-13 13:39 +1300
        Re: Toshiba A200 series Proadalizer not@telling.you.invalid (Computer Nerd Kev) - 2014-10-15 22:27 +0000
          Re: Toshiba A200 series Proadalizer Ron <beeb@woosh.co.nz> - 2014-10-17 10:43 +1300

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