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From: Unknown on 19 Jun 2010 10:42
You can't read about putting the battery in backwards because it doesn't
exist. That is
about the dumbest thing you can do on anything with a battery.
"Jose" <jose_ease(a)yahoo.com> wrote in message
news:099ac1fa-70b5-4002-9f8a-ef94337afe0f(a)z10g2000yqb.googlegroups.com...
On Jun 16, 6:20 am, Linus <Linusv...(a)mspamn.com> wrote:
> After you replace the CMOS battery, you often need to reset the CMOS.
> Usually
> you do this by taking the battery out, installing it backwards in its
> holder
> for 20 or 30 minutes to bleed off all the current. Then just take the
> battery
> out, turn it around and install it properly.
>
> Some mother boards have shorting terminals near the battery that let you
> bleed off the current without removing the battery, check your users guide
> for instructions on how to use those.
>
> Either way you do it, when you restart your computer, the OS will reload
> the
> CMOS with clean settings that may solve your problem.
>
> Linusverl
>
>
>
> "Ben Myers" wrote:
> > "Amanda" <some...(a)singnet.com.sg> wrote in
> > messagenews:#aXpUlHDLHA.4400(a)TK2MSFTNGP05.phx.gbl...
> > > Ben,
> > > I've just rebooted and tried hitting the F8 button, doesn't work,
> > > comes up
> > > to the same screen with the f8 f9 f1 and delete option.
>
> > If you are saying that pressing the F8 key does nothing when the message
> > is displayed, try a different keyboard. If you are getting into the BIOS
> > setup,
> > make sure you are saving the changes, since this typically is not done
> > automatically.
>
> > Ben
> > .

Where can I read about this method of resetting the CMOS by inserting
the battery backwards for 20 to 30 minutes to bleed off the current?


From: Paul on 19 Jun 2010 13:45
> > "Jose" <jose_ease(a)yahoo.com> wrote in message
> >
> > Where can I read about this method of resetting the CMOS by inserting
> > the battery backwards for 20 to 30 minutes to bleed off the current?
>
> Unknown wrote:
> You can't read about putting the battery in backwards because it doesn't
> exist. That is about the dumbest thing you can do on anything with a battery.

There is a diode in that path, that also functions as
reverse polarity protection. Go to page 18 of this document, and
look at diode D3 in the bottom left hand corner of page 18. if
the battery were reversed, the D3 diode would be reverse biased,
and the current could not flow.

http://www.intel.com/design/chipsets/designex/BXDPDG10.htm

Also, as a result of that diode, plopping the battery in
backwards, isn't that effective. The provided CMOS jumper,
applied to the three pin header shown in that schematic, is
effective at doing its job. It won't take long to
drain the CMOS well. It's a bit harder, on the motherboards
that provide solder pads and no header pins, to consistently
hold the connection long enough, to complete
the draining. But if you have a header to work with,
that is just as good at sitting in a holding pattern, as
jamming the battery in backwards.

Paul
From: Unknown on 19 Jun 2010 15:52
Of course. That is a protective device. It is to protect the item from
people who install batteries
backwards. I repeat, that is the dumbest thing you can do (Put batteries in
backwards)..
"Paul" <nospam(a)needed.com> wrote in message
news:hvivo7$41h$1(a)speranza.aioe.org...
>> > "Jose" <jose_ease(a)yahoo.com> wrote in message Where can I read about
>> > this method of resetting the CMOS by inserting
>> > the battery backwards for 20 to 30 minutes to bleed off the current?
>>
>> Unknown wrote:
>> You can't read about putting the battery in backwards because it doesn't
>> exist. That is about the dumbest thing you can do on anything with a
>> battery.
>
> There is a diode in that path, that also functions as
> reverse polarity protection. Go to page 18 of this document, and
> look at diode D3 in the bottom left hand corner of page 18. if
> the battery were reversed, the D3 diode would be reverse biased,
> and the current could not flow.
>
> http://www.intel.com/design/chipsets/designex/BXDPDG10.htm
>
> Also, as a result of that diode, plopping the battery in
> backwards, isn't that effective. The provided CMOS jumper,
> applied to the three pin header shown in that schematic, is
> effective at doing its job. It won't take long to
> drain the CMOS well. It's a bit harder, on the motherboards
> that provide solder pads and no header pins, to consistently
> hold the connection long enough, to complete
> the draining. But if you have a header to work with,
> that is just as good at sitting in a holding pattern, as
> jamming the battery in backwards.
>
> Paul


From: Jose on 19 Jun 2010 22:07
On Jun 19, 1:45 pm, Paul <nos...(a)needed.com> wrote:
> > > "Jose" <jose_e...(a)yahoo.com> wrote in message
>
> > > Where can I read about this method of resetting the CMOS by inserting
> > > the battery backwards for 20 to 30 minutes to bleed off the current?
>
> > Unknown wrote:
> > You can't read about putting the battery in  backwards because it doesn't
> > exist. That is about the dumbest thing you can do on anything with a battery.
>
> There is a diode in that path, that also functions as
> reverse polarity protection. Go to page 18 of this document, and
> look at diode D3 in the bottom left hand corner of page 18. if
> the battery were reversed, the D3 diode would be reverse biased,
> and the current could not flow.
>
> http://www.intel.com/design/chipsets/designex/BXDPDG10.htm
>
> Also, as a result of that diode, plopping the battery in
> backwards, isn't that effective. The provided CMOS jumper,
> applied to the three pin header shown in that schematic, is
> effective at doing its job. It won't take long to
> drain the CMOS well. It's a bit harder, on the motherboards
> that provide solder pads and no header pins, to consistently
> hold the connection long enough, to complete
> the draining. But if you have a header to work with,
> that is just as good at sitting in a holding pattern, as
> jamming the battery in backwards.
>
>     Paul

Yes - I have seen that diagram before. I like schematics.

I think I would just use the jumper, If the OP would comply with the
request for system make and model or msinfo32 info, we would be able
to look up a diagram and advise exactly what to do. The correct
questions have been asked, but the answers are not coming.

I was just trying to figure out how this put the battery in backwards
idea came about. It sounded astonishing.

From: Amanda on 19 Jun 2010 15:10

"Jose" <jose_ease(a)yahoo.com> wrote in message
news:099ac1fa-70b5-4002-9f8a-ef94337afe0f(a)z10g2000yqb.googlegroups.com...
On Jun 16, 6:20 am, Linus <Linusv...(a)mspamn.com> wrote:

Where can I read about this method of resetting the CMOS by inserting
the battery backwards for 20 to 30 minutes to bleed off the current?

I'm not sure about that either, you'll have to check with Linus, just a few
threads up.



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