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Groups > comp.sys.laptops > #2415

Re: cannot power "on" ASUS laptop after power outage

From mike <ham789@netzero.net>
Newsgroups alt.comp.periphs.mainboard.asus, alt.os.linux.ubuntu, comp.sys.laptops
Subject Re: cannot power "on" ASUS laptop after power outage
Date 2015-10-21 00:10 -0700
Organization A noiseless patient Spider
Message-ID <n07dmf$li3$1@dont-email.me> (permalink)
References (4 earlier) <h0l42b9lagljk7affel3lvbcjk4pbjt7ic@4ax.com> <n05kbf$otv$1@news.albasani.net> <jfqc2bt4q2nlbff4bng9a1l2bopcgqu330@4ax.com> <n0662b$58e$1@dont-email.me> <n06ijr$men$1@dont-email.me>

Cross-posted to 3 groups.

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On 10/20/2015 4:29 PM, Paul wrote:
> mike wrote:
>
>> That advice is always correct, except when it isn't.
>> Designers sometimes do stupid things to reduce costs.
>> Sometimes advisers extrapolate their experience to situations
>> where it doesn't apply and express it with arrogance.
>>
>> Check out the schematic for a Compaq Aero 4-25.
>> The only thing between the battery and the charge jack is a FET switch.
>> They use the current limit in the power brick to limit the charge
>> current.  If you use a charger with a higher current limit, you overheat
>> the battery.
>> If you use an unlimited current source, the FET catches fire.
>> Somewhere around here I have a motherbord with a hole burned in it.
>>
>> Expressing advice concisely and completely with maximum arrogance
>> to a newbie without a voltmeter or the
>> means or understanding to verify the advice is irresponsible...
>> even if it is correct ALMOST all of the time.
>> Sometimes, the advice doesn't apply.
>
> You missed a golden opportunity.
>
> I already provided a link from badcaps.net, with a
> *schematic* for the laptop. Apply for a login account,
> so you can download the schematic. I already had an account
> on badcaps, so could get this immediately.
>
> "ASUS N61JQ won't start"
> http://www.badcaps.net/forum/showthread.php?t=42461
>
> You can apply your keen analytical skills to that schematic
> and tell us how the unit works.
>
> PDF page 89 has the battery controller (MB39A132).
> PDF page 60 has the DC jack with inductive surge (undershoot) protection.
>
> And to help you on your way, this doc gives you an
> overview on the MB39A132 feature set.
>
> "DC/DC Converter IC for Charging Li-ion Batteries MB39A132 ..."
> http://www.fujitsu.com/downloads/EDG/binary/pdf/find/26-3e/7.pdf
>
> What do you notice on Figure 9 Page 5 ? It uses an SMPS
> with high side/low side MOSFETs for controlling the charging
> of the battery.
>
> What can you feed an SMPS with ? All sorts of stuff.
> Very flexible. What may not be flexible, is some of the
> voltage thresholds set to work with a 19V adapter.
> (The chip detects when the AC adapter is plugged in.)
>
> I got a datasheet for the MB39A132 here. But that
> isn't necessary needed right away.
>
> http://master-chip.ru/store/files/b75d64b3-f625-774c-9992-25c047244b48/mb39a132.pdf
>
>
> *******
>
> Your quoted material, is from a 20 year old laptop,
> a laptop with NiMH battery technology. What are
> the odds that a current generation laptop is
> as crude as that ? You yourself contributed to
> this faq.
>
> http://www.faqs.org/faqs/pc-hardware-faq/laptops/compaq-aero/
>
>     Paul
Well, these newsgroups last forever.  Just because you know what
you're doing, doesn't mean that everyone else does.

I already stated that it's likely that it's OK.

I'm merely responding to the knowitalls who state with
authority that they have all the answers, when they really
don't actually know EVERYTHING.
It's very easy to take some experience and extrapolate it to
the point where it gets someone else in trouble.
Too much typing and not nearly enough thinking.

Even 20 years later, there are engineers still fucking up
designs.  You find out after it's too late.

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Thread

cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 11:33 -0700
  Re: cannot power "on" ASUS laptop after power outage Mike Easter <MikeE@ster.invalid> - 2015-10-15 11:40 -0700
    Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 11:56 -0700
      Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 12:21 -0700
        Re: cannot power "on" ASUS laptop after power outage "Jonathan N. Little" <lws4art@gmail.com> - 2015-10-15 15:29 -0400
          Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 12:36 -0700
  Re: cannot power "on" ASUS laptop after power outage Bob_Villa <pheeh.zero@gmail.com> - 2015-10-15 11:42 -0700
    Re: cannot power "on" ASUS laptop after power outage Bob_Villa <pheeh.zero@gmail.com> - 2015-10-15 11:43 -0700
      Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 11:59 -0700
  Re: cannot power "on" ASUS laptop after power outage Johnny <johnny@invalid.net> - 2015-10-15 14:41 -0500
    Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 12:56 -0700
      Re: cannot power "on" ASUS laptop after power outage "Jonathan N. Little" <lws4art@gmail.com> - 2015-10-15 16:08 -0400
        Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 13:42 -0700
      Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-15 13:21 -0700
  Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-16 08:11 -0400
    Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-16 20:13 -0700
      Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-16 21:05 -0700
        Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 01:07 -0400
      Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 01:00 -0400
        Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-16 23:03 -0700
          Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 08:19 -0400
            Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-17 12:04 -0700
              Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 02:56 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:22 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 03:40 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:50 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 03:59 +0000
                Re: cannot power "on" ASUS laptop after power outage Onion Knight <onionknight@linuxmail.org> - 2015-10-18 11:14 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-18 11:17 -0400
                Re: cannot power "on" ASUS laptop after power outage Godzilla <godzilla@lizardboss.invalid> - 2015-10-18 15:24 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-18 17:06 -0400
                Re: cannot power "on" ASUS laptop after power outage Godzilla <godzilla@lizardboss.invalid> - 2015-10-18 22:22 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-18 11:18 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 21:01 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-18 17:10 -0400
                Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-18 13:58 -0700
      Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 01:03 -0400
      Re: cannot power "on" ASUS laptop after power outage Caver1 <caver1@inthemud.org> - 2015-10-17 09:48 -0400
        Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 10:01 -0400
          Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-20 07:50 -0700
            Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 12:21 -0400
              Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-20 11:17 -0700
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 14:33 -0400
                Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-20 11:54 -0700
              Re: cannot power "on" ASUS laptop after power outage mike <ham789@netzero.net> - 2015-10-20 12:54 -0700
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 16:00 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 16:01 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 16:03 -0400
                Re: cannot power "on" ASUS laptop after power outage mike <ham789@netzero.net> - 2015-10-20 14:32 -0700
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 19:51 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 16:04 -0400
                Re: cannot power "on" ASUS laptop after power outage Paul <nospam@needed.com> - 2015-10-20 19:29 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 20:03 -0400
                Re: cannot power "on" ASUS laptop after power outage mike <ham789@netzero.net> - 2015-10-21 00:10 -0700
                Re: cannot power "on" ASUS laptop after power outage Paul <nospam@needed.com> - 2015-10-21 03:31 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-21 08:40 -0400
                Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-21 14:22 -0700
                Re: cannot power "on" ASUS laptop after power outage Paul <nospam@needed.com> - 2015-10-21 18:32 -0400
                Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-21 18:43 -0700
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-21 08:30 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-21 08:30 -0400
        Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-17 09:07 -0700
          Re: cannot power "on" ASUS laptop after power outage Mike Easter <MikeE@ster.invalid> - 2015-10-17 10:22 -0700
            Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-17 11:39 -0700
              Re: cannot power "on" ASUS laptop after power outage Mike Easter <MikeE@ster.invalid> - 2015-10-17 12:21 -0700
                Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-17 12:36 -0700
                Re: cannot power "on" ASUS laptop after power outage "Cybe R. Wizard" <cybe_r_wizard@WizardsTower.invalid> - 2015-10-17 20:43 -0500
  Re: cannot power "on" ASUS laptop after power outage Paul <nospam@needed.com> - 2015-10-16 09:23 -0400
    Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-16 09:37 -0700
      Re: cannot power "on" ASUS laptop after power outage Marek Novotny <marek.novotny@marspolar.com> - 2015-10-16 09:39 -0700
        Re: cannot power "on" ASUS laptop after power outage "Adam" <adam@no_thanks.com> - 2015-10-16 10:19 -0700
        Re: cannot power "on" ASUS laptop after power outage "Cybe R. Wizard" <cybe_r_wizard@WizardsTower.invalid> - 2015-10-16 14:47 -0500
          Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-16 23:18 +0000
            Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-16 20:17 -0400
              Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 02:29 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:07 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 03:42 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:52 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 04:02 +0000
            Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-16 20:18 -0400
              Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 02:32 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:09 -0400
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:11 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 03:53 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-17 23:56 -0400
                Re: cannot power "on" ASUS laptop after power outage not@telling.you.invalid (Computer Nerd Kev) - 2015-10-18 04:06 +0000
                Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-18 00:58 -0400
          Re: cannot power "on" ASUS laptop after power outage crankypuss <invalid@invalid.invalid> - 2015-10-17 04:01 -0600
  Re: cannot power "on" ASUS laptop after power outage Big Bad Bob <BigBadBob-at-mrp3-dot-com@testing.local> - 2015-10-20 11:01 -0700
    Re: cannot power "on" ASUS laptop after power outage DecadentLinuxUserNumeroUno <DLU1@DecadentLinuxUser.org> - 2015-10-20 14:31 -0400

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