VB601 random reboots

Hi,

You should take a look to all the capacitors near the cpu slot.
I repaired 5 or 6 of them in the last 2-3 months and the capacitors are probably the culprit.
Look if they are bulged, rounded or if they leaked on the motherboard.

The following link will bring you to a guy's website that replace them (bad capacitors):

<a style='text-decoration: underline;' href="http://www.motherboardrepair.com/" target="_blank">http://www.motherboardrepair.com/</a>


Look at his website, there are many examples for bad capacitors:

<a style='text-decoration: underline;' href="http://www.motherboardrepair.com/index.php?sec=images" target="_blank">http://www.motherboardrepair.com/index.php?sec=images</a>

These images are the best ones for bad capacitors:


<a style='text-decoration: underline;' href="http://www.motherboardrepair.com/images/BadCaps2.jpg" target="_blank">http://www.motherboardrepair.com/images/BadCaps2.jpg</a>
<a style='text-decoration: underline;' href="http://www.motherboardrepair.com/images/BadCaps3.jpg" target="_blank">http://www.motherboardrepair.com/images/BadCaps3.jpg</a>
<a style='text-decoration: underline;' href="http://www.motherboardrepair.com/images/BE6II_bad_caps_1.jpg" target="_blank">http://www.motherboardrepair.com/images/BE6II_bad_caps_1.jpg</a>

Good Luck!!

Tony

P.S.: Remove 'xyz' from email address to reply directly.



Erik the Bold wrote:
 >
 > Have VB601(B) ver 1.4 have been experiencing random re-boots, looking for
 > suggestions.
 >
 > system specs:
 >
 > latest bios
 > PII-450 not oc'd
 > crucial 128 mb PC133 - (2) sticks less than 1yr old
 > WIN 98
 > nVidia Viper V550 video card
 > WD 30gb hd
 > Generic CD
 > Zip drive
 > Floppy
 > Conner tape backup
 > APC BackUPS 450
 >
 > System has been working fine for more than 3 years
 >
 > Will reboot sometimes even when checking memory or accessing bios, so
 > doesn't appear to be software related
 >
 > AidA32 shows system temps
 > within acceptable limits;
 > mb 25 dec C (77F)
 > proc 45 deg C (115F)
 >
 > Voltages are:
 >
 > CPU 2.00v
 > CPU aux 1.49v
 > +3.3v 3.33v
 > +5.0v 5.03v
 > +12.0v 12.03v
 > -12.0v -11.46v
 > -5.0v -5.00v
 > +5.0v standby 7.36v
 > battery 3.26v
 >
 > I question the CPU aux and +5v standby voltages....what are these for ??
 >
 > Sometimes will run for hours, other times will reboot in the middle of a
 > reboot.
 > My thoughts lean towards a failing PS, but any suggestions ????
 >
 > Thanks in advance...........<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: VB601 random reboots 

Replaced power supply this morning with generic 300w PS from local comp
store, unit has been running fine for 3+ hours (still crossing my fingers)

"Alex Zorrilla" <apz DeleteThis @zxeng.com> wrote in message
news:3FA16B88.7C3BF9EF@zxeng.com...
 > Erik,
 >
 > I tend to agree with you about the power supply, but it is hard to say for
 > sure. That would be my first guess, though. You may also make sure that
all
 > your components are well seated and nothing is loose. This includes CPU,
 > RAM, AGP/PCI/ISA cards, etc.
 >
 > +5Vsb is the standby power delivered to the motherboard when the computer
is
 > "off". Unless you have your computer totally unplugged from the wall,
there
 > is a little bit of power delievered to the motherboard. This is also used
 > when your computer is in "suspend" mode. The value given here is a bit
high,
 > but I doubt it is causing your problems.
 >
 > CPU aux voltage is used by the internal CPU bus (I forget the correct
 > techincal term for it). For a Pentium II, the correct value is 1.5V, so
you
 > are OK here.
 >
 > --Alex
 >
 >
 > Erik the Bold wrote:
 >
  > > Have VB601(B) ver 1.4 have been experiencing random re-boots, looking
for
  > > suggestions.
  > >
  > > system specs:
  > >
  > > latest bios
  > > PII-450 not oc'd
  > > crucial 128 mb PC133 - (2) sticks less than 1yr old
  > > WIN 98
  > > nVidia Viper V550 video card
  > > WD 30gb hd
  > > Generic CD
  > > Zip drive
  > > Floppy
  > > Conner tape backup
  > > APC BackUPS 450
  > >
  > > System has been working fine for more than 3 years
  > >
  > > Will reboot sometimes even when checking memory or accessing bios, so
  > > doesn't appear to be software related
  > >
  > > AidA32 shows system temps
  > > within acceptable limits;
  > > mb 25 dec C (77F)
  > > proc 45 deg C (115F)
  > >
  > > Voltages are:
  > >
  > > CPU 2.00v
  > > CPU aux 1.49v
  > > +3.3v 3.33v
  > > +5.0v 5.03v
  > > +12.0v 12.03v
  > > -12.0v -11.46v
  > > -5.0v -5.00v
  > > +5.0v standby 7.36v
  > > battery 3.26v
  > >
  > > I question the CPU aux and +5v standby voltages....what are these for ??
  > >
  > > Sometimes will run for hours, other times will reboot in the middle of a
  > > reboot.
  > > My thoughts lean towards a failing PS, but any suggestions ????
  > >
  > > Thanks in advance...........
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: VB601 random reboots 

Thanks for the suggestion, however, I am familiar with the capacitor issue
and that's the first thing I looked at........... replaced PS this morning
and seems ok so far....................


"Tony R" <tonyrxyz.RemoveThis@globetrotter.net> wrote in message
news:3FA1B308.7CE71B80@globetrotter.net...
 > Hi,
 >
 > You should take a look to all the capacitors near the cpu slot.
 > I repaired 5 or 6 of them in the last 2-3 months and the capacitors are
probably the culprit.
 > Look if they are bulged, rounded or if they leaked on the motherboard.
 >
 > The following link will bring you to a guy's website that replace them
(bad capacitors):
 >
<font color=purple> > <a style='text-decoration: underline;' href="http://www.motherboardrepair.com/</font" target="_blank">http://www.motherboardrepair.com/</font</a>>
 >
 >
 > Look at his website, there are many examples for bad capacitors:
 >
<font color=purple> > <a style='text-decoration: underline;' href="http://www.motherboardrepair.com/index.php?sec=images</font" target="_blank">http://www.motherboardrepair.com/index.php?sec=images</font</a>>
 >
 > These images are the best ones for bad capacitors:
 >
 >
<font color=purple> > <a style='text-decoration: underline;' href="http://www.motherboardrepair.com/images/BadCaps2.jpg</font" target="_blank">http://www.motherboardrepair.com/images/BadCaps2.jpg</font</a>>
<font color=purple> > <a style='text-decoration: underline;' href="http://www.motherboardrepair.com/images/BadCaps3.jpg</font" target="_blank">http://www.motherboardrepair.com/images/BadCaps3.jpg</font</a>>
<font color=purple> > <a style='text-decoration: underline;' href="http://www.motherboardrepair.com/images/BE6II_bad_caps_1.jpg</font" target="_blank">http://www.motherboardrepair.com/images/BE6II_bad_caps_1.jpg</font</a>>
 >
 > Good Luck!!
 >
 > Tony
 >
 > P.S.: Remove 'xyz' from email address to reply directly.
 >
 >
 >
 > Erik the Bold wrote:
  > >
  > > Have VB601(B) ver 1.4 have been experiencing random re-boots, looking
for
  > > suggestions.
  > >
  > > system specs:
  > >
  > > latest bios
  > > PII-450 not oc'd
  > > crucial 128 mb PC133 - (2) sticks less than 1yr old
  > > WIN 98
  > > nVidia Viper V550 video card
  > > WD 30gb hd
  > > Generic CD
  > > Zip drive
  > > Floppy
  > > Conner tape backup
  > > APC BackUPS 450
  > >
  > > System has been working fine for more than 3 years
  > >
  > > Will reboot sometimes even when checking memory or accessing bios, so
  > > doesn't appear to be software related
  > >
  > > AidA32 shows system temps
  > > within acceptable limits;
  > > mb 25 dec C (77F)
  > > proc 45 deg C (115F)
  > >
  > > Voltages are:
  > >
  > > CPU 2.00v
  > > CPU aux 1.49v
  > > +3.3v 3.33v
  > > +5.0v 5.03v
  > > +12.0v 12.03v
  > > -12.0v -11.46v
  > > -5.0v -5.00v
  > > +5.0v standby 7.36v
  > > battery 3.26v
  > >
  > > I question the CPU aux and +5v standby voltages....what are these for ??
  > >
  > > Sometimes will run for hours, other times will reboot in the middle of a
  > > reboot.
  > > My thoughts lean towards a failing PS, but any suggestions ????
  > >
  > > Thanks in advance...........<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: VB601 random reboots