J
Jose
Guest
On Jun 19, 1:45?pm, Paul wrote:
> > > "Jose" 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.
> > > "Jose" 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.