Changing CMOS battery on Compaq Presario CDS 520

I have a 12-year-old Compaq Presario CDS 520 desktop machine that
(astonishingly) is still running after all these years - however, it's
recently become highly tempramental as to whether it wants to power up
or not, and I suspect the cause of this is that the CMOS battery needs
replacing.

The difficulty is that the battery is solidly fixed in place,
apparently soldered (or very firmly attached in some other way) to a
metal clamp that's in turn very firmly attached to the motherboard.
I've timidly pushed and pulled the battery and clamp this way and that,
but it seems there's no obvious way of removing it without causing
damage.

I've posted a photo of the motherboard, showing the way the battery is
attached, he http://www.flickr.com/photos/41165275@N00/157524362/

Is there any easy method of removing batteries that are attached in
this way? Or do I have to get the soldering iron out? All ideas
gratefully accepted...

"Mark" wrote in message
oups.com...
I have a 12-year-old Compaq Presario CDS 520 desktop machine that
(astonishingly) is still running after all these years - however, it's
recently become highly tempramental as to whether it wants to power up
or not, and I suspect the cause of this is that the CMOS battery needs
replacing.

A defective battery will *not* prevent a computer to power up///



The difficulty is that the battery is solidly fixed in place,
apparently soldered (or very firmly attached in some other way) to a
metal clamp that's in turn very firmly attached to the motherboard.
I've timidly pushed and pulled the battery and clamp this way and that,
but it seems there's no obvious way of removing it without causing
damage.

I've posted a photo of the motherboard, showing the way the battery is
attached, he http://www.flickr.com/photos/41165275@N00/157524362/

Is there any easy method of removing batteries that are attached in
this way? Or do I have to get the soldering iron out? All ideas
gratefully accepted...

Uses a 4.5V external battery at J 11
"El Bandito" wrote in message
...


"Mark" wrote in message
oups.com...
I have a 12-year-old Compaq Presario CDS 520 desktop machine that
(astonishingly) is still running after all these years - however, it's
recently become highly tempramental as to whether it wants to power up
or not, and I suspect the cause of this is that the CMOS battery needs
replacing.

A defective battery will *not* prevent a computer to power up///



The difficulty is that the battery is solidly fixed in place,
apparently soldered (or very firmly attached in some other way) to a
metal clamp that's in turn very firmly attached to the motherboard.
I've timidly pushed and pulled the battery and clamp this way and that,
but it seems there's no obvious way of removing it without causing
damage.

I've posted a photo of the motherboard, showing the way the battery is
attached, he http://www.flickr.com/photos/41165275@N00/157524362/

Is there any easy method of removing batteries that are attached in
this way? Or do I have to get the soldering iron out? All ideas
gratefully accepted...