Gigabyte GA-7VRXP hanging on bootup ???

Just to let you know I have the rev 1 mobo and also changed the 2 caps
mentioned... 1,200uF at 6.3V I used 1,200 10V Panasonics low ESR ones,
the caps never give me trouble though, rev 2 mobo is not affected.

Here's some interesting reading from my post a while back about bad
caps in mobo's
> 'Component Problems: Taiwan Low ESR Radial Aluminum Electrolytic
> Capacitors' (http://www.niccomp.com/taiwanlowesr.htm) More interesting
> reading -: 'Hushed-Up Disaster Dept. - Columns by PC Magazine'
> (http://www.pcmag.com/article2/0,4149,939887,00.asp)
> 'Don Davidson Computer / Bad Capacitors in System Boards'
> (http://home.earthlink.net/~doniteli/index27.htm)
>

I had intermittent lock up once and everytime I rebooted the bios it
went OK... but came back a week or so later... so in went a new PSU,
still same...

.... replacing the hard drive cured the problem, the 4 yr old Western
Digital started to clang and bang, sometimes it would load Windows and
sometime's never, funny thing it only seem do it when I was doing
something important.

Just wondering these boards are about 4 years old now so how's the bios
battery?

You'll probably know that you'll get bios boot and be able to enter the
bios screen with just the bare essentials, CPU, RAM and Graphic card the
rest can be disconnected, the clue might suggest the graphic card if
your characters are gobbly gook.

Davy
 >> Stay informed about: Gigabyte GA-7VRXP hanging on bootup ??? 

Hello

A while ago I replacd the two 1200uF caps near the game port with 1500uF Low
ESR caps 105 degrees C

It seemed to have completely fixed the problem at the time until a few
months later and then the same problems starts to repeat itself

Now maybe these caps have deteriorated or others are starting to but there
are no visual signs of any leaking electrolyte from the others.

Just as we speak the mobo has got really bad. It tries to boot up and then
resets itself in a continuous loop.

I will check out the forum you mentioned

Thanks for your help.

regards
david


> Looking at a picture of the board, the two capacitors near the Game
> Connector,
> that you replaced, are part of Vcore. There are two more Vcore caps, next
> to the
> two toroidal coils. Caps can bulge on the top, but they can also leak
> electrolyte
> onto the motherboard. Check for a brown stain right underneath the
> capacitors.
>
> What did you replace the caps with ? Caps have obvious parameters (like
> the
> capacitance and working voltage, printed on the sleeve). They also have
> ESR and
> ESL, and those parameters are part of the Vcore design as well. Sometimes,
> if
> you download the datasheet for the Vcore regulator chip, it will give some
> hints as to how to select capacitors. (The picture on the Gigabyte site is
> not clear enough for me to see a part number for the regulator chip.)
>
> If you need a forum, try:
>
> http://www.badcaps.net/forum/
>
> The main www.badcaps.net site also sells caps. I've never done business
> with them, and don't know anything about them.
>
> Paul
 >> Stay informed about: Gigabyte GA-7VRXP hanging on bootup ??? 

Hi David,


One of my customers had the same board. A few caps near the game connector
had bulged tops and leaked.
But more important, one of the power FET's was burned (nearly desoldered
from the board). If the voltage
converter flyback diode and/or power FET is damaged, the caps start to
deteriorated rapidly. Prepare yourself
for the board to die soon. Even if you manage to replace parts, the
component specifications and grades are
that important to be matched, alternatives might cause even more trouble.

Move to a new board while there is still time !


Kind regards,
John7



"David" <davids DeleteThis @net2000.com.au> schreef in bericht
news:466bb9c8$0$59830$c30e37c6@lon-reader.news.telstra.net...
> Hello
>
> A while ago I replacd the two 1200uF caps near the game port with 1500uF
> Low ESR caps 105 degrees C
>
> It seemed to have completely fixed the problem at the time until a few
> months later and then the same problems starts to repeat itself
>
> Now maybe these caps have deteriorated or others are starting to but there
> are no visual signs of any leaking electrolyte from the others.
>
> Just as we speak the mobo has got really bad. It tries to boot up and then
> resets itself in a continuous loop.
>
> I will check out the forum you mentioned
>
> Thanks for your help.
>
> regards
> david
>
>
>> Looking at a picture of the board, the two capacitors near the Game
>> Connector,
>> that you replaced, are part of Vcore. There are two more Vcore caps, next
>> to the
>> two toroidal coils. Caps can bulge on the top, but they can also leak
>> electrolyte
>> onto the motherboard. Check for a brown stain right underneath the
>> capacitors.
>>
>> What did you replace the caps with ? Caps have obvious parameters (like
>> the
>> capacitance and working voltage, printed on the sleeve). They also have
>> ESR and
>> ESL, and those parameters are part of the Vcore design as well.
>> Sometimes, if
>> you download the datasheet for the Vcore regulator chip, it will give
>> some
>> hints as to how to select capacitors. (The picture on the Gigabyte site
>> is
>> not clear enough for me to see a part number for the regulator chip.)
>>
>> If you need a forum, try:
>>
>> http://www.badcaps.net/forum/
>>
>> The main www.badcaps.net site also sells caps. I've never done business
>> with them, and don't know anything about them.
>>
>> Paul
>
>
 >> Stay informed about: Gigabyte GA-7VRXP hanging on bootup ??? 

Hi David,


One of my customers had the same board. A few caps near the game connector
had bulged tops and leaked. But more important, one of the power FET's was
burned (nearly desoldered from the board). If the voltage converter flyback
diode and/or power FET is damaged, the caps start to deteriorated rapidly.

Prepare yourself for the board to die soon. Even if you manage to replace
parts, the component specifications and grades are that important to be
matched, alternatives might cause even more trouble.

Move to a new board while there is still time !


Kind regards,
John7



"David" <davids DeleteThis @net2000.com.au> schreef in bericht
news:466bb9c8$0$59830$c30e37c6@lon-reader.news.telstra.net...
> Hello
>
> A while ago I replacd the two 1200uF caps near the game port with 1500uF
> Low ESR caps 105 degrees C
>
> It seemed to have completely fixed the problem at the time until a few
> months later and then the same problems starts to repeat itself
>
> Now maybe these caps have deteriorated or others are starting to but there
> are no visual signs of any leaking electrolyte from the others.
>
> Just as we speak the mobo has got really bad. It tries to boot up and then
> resets itself in a continuous loop.
>
> I will check out the forum you mentioned
>
> Thanks for your help.
>
> regards
> david
>
>
>> Looking at a picture of the board, the two capacitors near the Game
>> Connector,
>> that you replaced, are part of Vcore. There are two more Vcore caps, next
>> to the
>> two toroidal coils. Caps can bulge on the top, but they can also leak
>> electrolyte
>> onto the motherboard. Check for a brown stain right underneath the
>> capacitors.
>>
>> What did you replace the caps with ? Caps have obvious parameters (like
>> the
>> capacitance and working voltage, printed on the sleeve). They also have
>> ESR and
>> ESL, and those parameters are part of the Vcore design as well.
>> Sometimes, if
>> you download the datasheet for the Vcore regulator chip, it will give
>> some
>> hints as to how to select capacitors. (The picture on the Gigabyte site
>> is
>> not clear enough for me to see a part number for the regulator chip.)
>>
>> If you need a forum, try:
>>
>> http://www.badcaps.net/forum/
>>
>> The main www.badcaps.net site also sells caps. I've never done business
>> with them, and don't know anything about them.
>>
>> Paul
>
>
 >> Stay informed about: Gigabyte GA-7VRXP hanging on bootup ??? 

Thanks for your reply

I replaced the two caps again just in case the previous ones I had replaced
had failed.

Board fired up OK this time and ran OK for hours without a glitch but the
next day from cold it was continuously resetting itself and going haywire.

Sometimes when i moved things it would come good for some reason

Possible dry joint somewhere or maybe the CPU needs to be reseated again
which it has never done since I bought the computer.

I was getting desperate so I removed the heatsink and pulled the processor
out and put it back in and then move the release handle backwards and
forwards a half a dozen times. Removed old heat compound and put some new
stuff on and then put the heatsink back on.

It now seems to be reliable, but I've been down this track before. Just when
i think I have fixed it, then the problem rears it ugly head again.

I will just have to wait and see

By the way do you know of a way of transferring a harddisk from one computer
to another without having to do a fresh reinstall of windows ?? It's a real
pain in the arse having to reinstall all of the apps

Reagrds
David


"John7" <NoSp RemoveThis @m.No> wrote in message
news:f4lnbh$pfg$2@news5.zwoll1.ov.home.nl...
> Hi David,
>
>
> One of my customers had the same board. A few caps near the game connector
> had bulged tops and leaked. But more important, one of the power FET's was
> burned (nearly desoldered from the board). If the voltage converter
> flyback
> diode and/or power FET is damaged, the caps start to deteriorated rapidly.
>
> Prepare yourself for the board to die soon. Even if you manage to replace
> parts, the component specifications and grades are that important to be
> matched, alternatives might cause even more trouble.
>
> Move to a new board while there is still time !
>
>
> Kind regards,
> John7
>
>
>
> "David" <davids RemoveThis @net2000.com.au> schreef in bericht
> news:466bb9c8$0$59830$c30e37c6@lon-reader.news.telstra.net...
>> Hello
>>
>> A while ago I replacd the two 1200uF caps near the game port with 1500uF
>> Low ESR caps 105 degrees C
>>
>> It seemed to have completely fixed the problem at the time until a few
>> months later and then the same problems starts to repeat itself
>>
>> Now maybe these caps have deteriorated or others are starting to but
>> there
>> are no visual signs of any leaking electrolyte from the others.
>>
>> Just as we speak the mobo has got really bad. It tries to boot up and
>> then
>> resets itself in a continuous loop.
>>
>> I will check out the forum you mentioned
>>
>> Thanks for your help.
>>
>> regards
>> david
>>
>>
>>> Looking at a picture of the board, the two capacitors near the Game
>>> Connector,
>>> that you replaced, are part of Vcore. There are two more Vcore caps,
>>> next
>>> to the
>>> two toroidal coils. Caps can bulge on the top, but they can also leak
>>> electrolyte
>>> onto the motherboard. Check for a brown stain right underneath the
>>> capacitors.
>>>
>>> What did you replace the caps with ? Caps have obvious parameters (like
>>> the
>>> capacitance and working voltage, printed on the sleeve). They also have
>>> ESR and
>>> ESL, and those parameters are part of the Vcore design as well.
>>> Sometimes, if
>>> you download the datasheet for the Vcore regulator chip, it will give
>>> some
>>> hints as to how to select capacitors. (The picture on the Gigabyte site
>>> is
>>> not clear enough for me to see a part number for the regulator chip.)
>>>
>>> If you need a forum, try:
>>>
>>> http://www.badcaps.net/forum/
>>>
>>> The main www.badcaps.net site also sells caps. I've never done business
>>> with them, and don't know anything about them.
>>>
>>> Paul
>>
>>
>
>
>
 >> Stay informed about: Gigabyte GA-7VRXP hanging on bootup ??? 

Hi David,


I hope your motherboard is still working fine.

Moving a hard disk with Windows to different hardware is tricky.
Tried this once but it failed. I could not remove the IDE driver
because the motherboard was dead. Got this info from reading.

First boot to Safe mode and remove de IDE harddisk drivers.
Shut down the system (do not reboot !).
Failing to remove the IDE drivers will cause STOP 0x7B errors on the new
hardware.
If possible a new motherboard with the same chipset and disk controller will
save a lot of troubles.
Move as many hardware as possible (maybe just temporaily) to the new
hardware,
preferably CPU, videocard, DVD/CD drives, other harddisks.
Move the Windows disk to the new hardware.
Boot and pray ... install drivers for all new hardware.
Windows OEM versions might refuse to run on this different hardware.
(OEM allows a limited number of hardware changes/upgrades)
If this happens you might try to call MS to reactivate Windows or search
elsewhere.

Keep me posted about your progress or start a new thread here.


Greetz,
John7


"David" <davids DeleteThis @net2000.com.au> schreef in bericht
news:466ebb4d$0$40416$c30e37c6@lon-reader.news.telstra.net...
> Thanks for your reply
>
> I replaced the two caps again just in case the previous ones I had
> replaced had failed.
>
> Board fired up OK this time and ran OK for hours without a glitch but the
> next day from cold it was continuously resetting itself and going haywire.
>
> Sometimes when i moved things it would come good for some reason
>
> Possible dry joint somewhere or maybe the CPU needs to be reseated again
> which it has never done since I bought the computer.
>
> I was getting desperate so I removed the heatsink and pulled the processor
> out and put it back in and then move the release handle backwards and
> forwards a half a dozen times. Removed old heat compound and put some new
> stuff on and then put the heatsink back on.
>
> It now seems to be reliable, but I've been down this track before. Just
> when i think I have fixed it, then the problem rears it ugly head again.
>
> I will just have to wait and see
>
> By the way do you know of a way of transferring a harddisk from one
> computer to another without having to do a fresh reinstall of windows ??
> It's a real pain in the arse having to reinstall all of the apps
>
> Reagrds
> David
>
>
> "John7" <NoSp DeleteThis @m.No> wrote in message
> news:f4lnbh$pfg$2@news5.zwoll1.ov.home.nl...
>> Hi David,
>>
>>
>> One of my customers had the same board. A few caps near the game
>> connector
>> had bulged tops and leaked. But more important, one of the power FET's
>> was
>> burned (nearly desoldered from the board). If the voltage converter
>> flyback
>> diode and/or power FET is damaged, the caps start to deteriorated
>> rapidly.
>>
>> Prepare yourself for the board to die soon. Even if you manage to replace
>> parts, the component specifications and grades are that important to be
>> matched, alternatives might cause even more trouble.
>>
>> Move to a new board while there is still time !
>>
>>
>> Kind regards,
>> John7
>>
>>
>>
>> "David" <davids DeleteThis @net2000.com.au> schreef in bericht
>> news:466bb9c8$0$59830$c30e37c6@lon-reader.news.telstra.net...
>>> Hello
>>>
>>> A while ago I replacd the two 1200uF caps near the game port with 1500uF
>>> Low ESR caps 105 degrees C
>>>
>>> It seemed to have completely fixed the problem at the time until a few
>>> months later and then the same problems starts to repeat itself
>>>
>>> Now maybe these caps have deteriorated or others are starting to but
>>> there
>>> are no visual signs of any leaking electrolyte from the others.
>>>
>>> Just as we speak the mobo has got really bad. It tries to boot up and
>>> then
>>> resets itself in a continuous loop.
>>>
>>> I will check out the forum you mentioned
>>>
>>> Thanks for your help.
>>>
>>> regards
>>> david
>>>
>>>
>>>> Looking at a picture of the board, the two capacitors near the Game
>>>> Connector,
>>>> that you replaced, are part of Vcore. There are two more Vcore caps,
>>>> next
>>>> to the
>>>> two toroidal coils. Caps can bulge on the top, but they can also leak
>>>> electrolyte
>>>> onto the motherboard. Check for a brown stain right underneath the
>>>> capacitors.
>>>>
>>>> What did you replace the caps with ? Caps have obvious parameters (like
>>>> the
>>>> capacitance and working voltage, printed on the sleeve). They also have
>>>> ESR and
>>>> ESL, and those parameters are part of the Vcore design as well.
>>>> Sometimes, if
>>>> you download the datasheet for the Vcore regulator chip, it will give
>>>> some
>>>> hints as to how to select capacitors. (The picture on the Gigabyte site
>>>> is
>>>> not clear enough for me to see a part number for the regulator chip.)
>>>>
>>>> If you need a forum, try:
>>>>
>>>> http://www.badcaps.net/forum/
>>>>
>>>> The main www.badcaps.net site also sells caps. I've never done business
>>>> with them, and don't know anything about them.
>>>>
>>>> Paul
>>>
>>>
>>
>>
>>
>
>
 >> Stay informed about: Gigabyte GA-7VRXP hanging on bootup ???