Toshiba TV29C90 problem; Image fades to black...

[Bob_Villa]

On Wednesday, February 29, 2012 11:47:39 PM UTC-6, awni wrote:

Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.

any help will be greatly appreciated.

You could also try here: http://groups.google.com/group/comp.sys.laptops/topics?hl=en

 

[Ken]

awni wrote:

Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.

any help will be greatly appreciated.

With the lights on the computer, I would assume you mean the power on
light? If there is power, and I would be using the power adapter, it
could be several things. The first thing I would do however is to
remove the RAM and reinstall it after cleaning the gold contacts with a
pencil eraser. A poor contact to the RAM would provide the error you
describe. You might also attach the laptop to another monitor via the
video output connector. It could be your display is the failing part.

Knowing how old the computer was would also be helpful.

 

[chuck]

On Thu, 01 Mar 2012 16:47:39 +1100, awni <warrenp6@tpg.com.au> wrote:

Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.

any help will be greatly appreciated.

Most likely the nvida video BGA chip has pins which have broken away
from the motherboard. There are places in the U.S. that will do a
competent repair and mod for $125.00. Chuck

 

[amdx]

On 3/1/2012 2:00 AM, awni wrote:

On 1/03/2012 6:56 PM, Bob_Villa wrote:
On Wednesday, February 29, 2012 11:47:39 PM UTC-6, awni wrote:
Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.

any help will be greatly appreciated.

You could also try here:
http://groups.google.com/group/comp.sys.laptops/topics?hl=en
Thank you, this is a good start, I will visit these two news groups and
look through them, much appreciated.
Please do still list more news groups here if you can think of anymore.

Not exactly your case but active and full of knowledge.
alt.comp.hardware.pc-homebuilt

Mikek

 

[NT]

On Mar 1, 4:05 pm, "Phil L" <neverchec...@hotmail.com> wrote:

Got an Olympus X-775 7.1mp digital camera, and it's fucked.
Tried batteries in it last week and it was acting up (it's not been used
since last Sept) - it was as if the batteries were dead, soooo I got some
new duracell and it's the same.

When batts are installed, the lens pops out and nothing happens - all the
buttons do nothing, but the lens keeps going in and out on it's own until it
goes off after a minute.

Read online that it could have got moisture inside and that it needed to be
split to allow it to dry, so six tiny screws were removed and it was left on
the mantelpiece for a few days, put it back together and it's still the
same, any ideas anyone?, I'm loathe to buy a new on on account of being a
tight cunt.

TIA

crossposted to sci.electronics.repair

 

[Jeff Liebermann]

On Thu, 01 Mar 2012 07:59:50 -0600, chuck <chuck@deja.net> wrote:

Most likely the nvida video BGA chip has pins which have broken away
from the motherboard. There are places in the U.S. that will do a
competent repair and mod for $125.00. Chuck

Sorta. It's not really Nvidia's fault. Any of the large BGA chips
have problems maintaining a connection to the PCB. The court
settlement which extended the manufacturers warranty for such design
screwups is long over.
<http://web.archive.org/web/20110714213423/http://nvidiasettlement.com/affectedmodels.html>
The HP dv6 is not on the list of affected models, but is one that I've
seen in the shop crap out in the same manner. You'll find vendors on
ebay that will fix it. For example:
<http://www.ebay.com/itm/170756141807>
You can also try to fix it yourself with a hot air desoldering
station. It's not easy or reliable.
--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com AE6KS

 

[Gareth Magennis]

"NT" <meow2222@care2.com> wrote in message
news:33cac45c-fe4d-4994-9cb4-648b45f600d7@w5g2000vbv.googlegroups.com...
On Mar 1, 4:05 pm, "Phil L" <neverchec...@hotmail.com> wrote:

Got an Olympus X-775 7.1mp digital camera, and it's fucked.
Tried batteries in it last week and it was acting up (it's not been used
since last Sept) - it was as if the batteries were dead, soooo I got some
new duracell and it's the same.

When batts are installed, the lens pops out and nothing happens - all the
buttons do nothing, but the lens keeps going in and out on it's own until
it
goes off after a minute.

Read online that it could have got moisture inside and that it needed to
be
split to allow it to dry, so six tiny screws were removed and it was left
on
the mantelpiece for a few days, put it back together and it's still the
same, any ideas anyone?, I'm loathe to buy a new on on account of being a
tight cunt.

TIA

crossposted to sci.electronics.repair



Next time you go to a poor country, take your broken camera with you. I had
my Olympus OM10 fixed in Bolivia for 8 US dollars.

Alternatively, why not use the camera, with its inny and outty lens thing,
as a novel sex toy?



Gareth.

 

On Thursday, March 1, 2012 4:47:39 PM UTC+11, awni wrote:

Hi all..
Just discovered this section of internet, News Groups.
Need help in the repair of a HP DV6-2012AX notebook.
Does not post. All lights on but no initial bost screen.
Anyone know what or where I could find any information to start trouble
shooting the motherboard?
This series is designed andbuild by Quanta computers in taiwan.

any help will be greatly appreciated.

yes, it is a solder joint problem, by accident I turned on the motherboard without the heatsink and fan assembly, within about 10 seconds the motherboard booted up. I then re-installed the heatsink and fan back on, while still warm, the motherboard functioned perfect. Turned it off and let it cool down to room temp, then tried to power up, same fault, all lights on and no post. after further inspection and testing found the Graphics IC to be at fault, needs reball and reflow. Same problem as all the damn ATI Graphics cards with large heatsinks.
Thank you all that have helped, your support is greatly appreciated.

 

[William Sommerwerck]

Simply opening up the camera and letting it sit is not going to dry it out.

You need to put it in a warm place, in a bag with silica gel or rice for a
few days. That might fix it.

 

[Wild_Bill]

I don't know anything about this particular camera.. But, installing new
batteries without testing them doesn't really prove much.
Everything that's mass produced in quantities similar to those of batteries,
is going to produce a number of faulty products.

My older digital cameras don't operate well at all, with alkaline
batteries.. even fresh, new, tested ones.

The lens motor may be the largest current demand of the entire camera, and
may be pulling the voltage level of the batteries down to a point where the
remaining charge left in the batteries is too low for normal operation of
the other camera circuits.. especially if the auto-focus circuit is trying
to adjust the lens any time the camera is on.
If the camera has a view mode for reviewing stored pics, that mode may be
less demanding than turning the camera on to take pics.

Trying the batteries in a flashlight or something similar isn't a definitive
test of the batteries' condition either, unless the voltage can be measured
with a load value similar to the camera's.

Someone said it may have gotten moisture inside.. but wouldn't most camera
owners know if their gear was stored in a damp place, or had gotten wet?

A good indication of whether a fault exists or not, could be determined by
checking the camera with known good batteries.. and freshly charged, good
quality rechargeables of reasonable capacity would be the best method to
use, IMO.

--
Cheers,
WB
..............


"NT" <meow2222@care2.com> wrote in message
news:33cac45c-fe4d-4994-9cb4-648b45f600d7@w5g2000vbv.googlegroups.com...
On Mar 1, 4:05 pm, "Phil L" <neverchec...@hotmail.com> wrote:

Got an Olympus X-775 7.1mp digital camera, and it's fucked.
Tried batteries in it last week and it was acting up (it's not been used
since last Sept) - it was as if the batteries were dead, soooo I got some
new duracell and it's the same.

When batts are installed, the lens pops out and nothing happens - all the
buttons do nothing, but the lens keeps going in and out on it's own until
it
goes off after a minute.

Read online that it could have got moisture inside and that it needed to
be
split to allow it to dry, so six tiny screws were removed and it was left
on
the mantelpiece for a few days, put it back together and it's still the
same, any ideas anyone?, I'm loathe to buy a new on on account of being a
tight cunt.

TIA

crossposted to sci.electronics.repair

 

[Gareth Magennis]

"Wild_Bill" <wb_wildbill@XSPAMyahoo.com> wrote in message
news:HO64r.127328$5f3.32731@en-nntp-12.dc1.easynews.com...

I don't know anything about this particular camera.. But, installing new
batteries without testing them doesn't really prove much.
Everything that's mass produced in quantities similar to those of
batteries, is going to produce a number of faulty products.

My older digital cameras don't operate well at all, with alkaline
batteries.. even fresh, new, tested ones.

The lens motor may be the largest current demand of the entire camera, and
may be pulling the voltage level of the batteries down to a point where
the remaining charge left in the batteries is too low for normal operation
of the other camera circuits.. especially if the auto-focus circuit is
trying to adjust the lens any time the camera is on.
If the camera has a view mode for reviewing stored pics, that mode may be
less demanding than turning the camera on to take pics.

Trying the batteries in a flashlight or something similar isn't a
definitive test of the batteries' condition either, unless the voltage can
be measured with a load value similar to the camera's.

Someone said it may have gotten moisture inside.. but wouldn't most camera
owners know if their gear was stored in a damp place, or had gotten wet?

A good indication of whether a fault exists or not, could be determined by
checking the camera with known good batteries.. and freshly charged, good
quality rechargeables of reasonable capacity would be the best method to
use, IMO.

--
Cheers,
WB

Many digital cameras need to be "told" by the user which type of batteries
they have inside them. Either rechargeables at around 1.2v per cell or
standard batteries at 1.5, or some other high capacity thingy at whatever
voltage.

I have always thought this was just to calibrate the battery power meter
(and the flat battery warning/ cutout system), but yes, it might be worth
checking in this instance if the camera just doesn't like the type of
batteries it is actually getting.

Long shot though.



Gareth.

 

[amdx]

On 3/2/2012 4:57 AM, Gareth Magennis wrote:

"NT"<meow2222@care2.com> wrote in message
news:33cac45c-fe4d-4994-9cb4-648b45f600d7@w5g2000vbv.googlegroups.com...
On Mar 1, 4:05 pm, "Phil L"<neverchec...@hotmail.com> wrote:
Got an Olympus X-775 7.1mp digital camera, and it's fucked.
Tried batteries in it last week and it was acting up (it's not been used
since last Sept) - it was as if the batteries were dead, soooo I got some
new duracell and it's the same.

When batts are installed, the lens pops out and nothing happens - all the
buttons do nothing, but the lens keeps going in and out on it's own until
it
goes off after a minute.

Read online that it could have got moisture inside and that it needed to
be
split to allow it to dry, so six tiny screws were removed and it was left
on
the mantelpiece for a few days, put it back together and it's still the
same, any ideas anyone?, I'm loathe to buy a new on on account of being a
tight cunt.

TIA


Alternatively, why not use the camera, with its inny and outty lens thing,
as a novel sex toy?

Gareth.

Kinda brought that on himself didn't he?
Mikek

 

[News]

In message
<2d050ddc-c670-4eec-a925-37bc52f56e43@b14g2000vbz.googlegroups.com>, NT
<meow2222@care2.com> writes

On Apr 13, 2:06 pm, News <Gra...@nospam.demon.co.uk> wrote:

When shut down, for any reason, it will not restart until the battery
has run down, and I mean completely flat.  Every little volt.  Removing
the battery does not help - the battery has to be in place, but
completely expired, which normally takes a couple of days.  Then, with
the charger plugged in, it will boot normally and run perfectly, either
from battery or mains until the next upgrade/shut down.

Maybe try an OS with more uptime

<grin> Perhaps strangely, uptime has never been a problem. The only
time I reboot is following installation of MS updates.

I've no idea re the fault, best to
ask on sci.electronics.repair.

OK, thanks.
--
Graeme

 

[Graham.]

On Fri, 13 Apr 2012 06:18:22 -0700 (PDT), NT <meow2222@care2.com>
wrote:

On Apr 13, 2:06 pm, News <Gra...@nospam.demon.co.uk> wrote:
We have a little net book, running XP, and it is a lovely little machine
for browsing the web, reading mail etc.  Works perfectly except when
rebooted, which I only do after MS updates.

When shut down, for any reason, it will not restart until the battery
has run down, and I mean completely flat.  Every little volt.  Removing
the battery does not help - the battery has to be in place, but
completely expired, which normally takes a couple of days.  Then, with
the charger plugged in, it will boot normally and run perfectly, either
from battery or mains until the next upgrade/shut down.

The battery itself seems to be OK - it will run the machine for several
hours, which is all it managed when the machine was new a couple of
years ago.

Any thoughts?

Maybe try an OS with more uptime I've no idea re the fault, best to
ask on sci.electronics.repair.

A little more infomation perhaps?
Anything on the screen, does it do the initial POST, any error
messages?

--
Graham.
%Profound_observation%

 

[NT]

On Apr 13, 2:06 pm, News <Gra...@nospam.demon.co.uk> wrote:

We have a little net book, running XP, and it is a lovely little machine
for browsing the web, reading mail etc.  Works perfectly except when
rebooted, which I only do after MS updates.

When shut down, for any reason, it will not restart until the battery
has run down, and I mean completely flat.  Every little volt.  Removing
the battery does not help - the battery has to be in place, but
completely expired, which normally takes a couple of days.  Then, with
the charger plugged in, it will boot normally and run perfectly, either
from battery or mains until the next upgrade/shut down.

The battery itself seems to be OK - it will run the machine for several
hours, which is all it managed when the machine was new a couple of
years ago.

Any thoughts?

Maybe try an OS with more uptime I've no idea re the fault, best to
ask on sci.electronics.repair.

 

[News]

In message <84cgo7dbgp0dv5u4tm32h4gjbdk0cijmb6@4ax.com>, Graham.
<me@privacy.net> writes

On Fri, 13 Apr 2012 06:18:22 -0700 (PDT), NT <meow2222@care2.com
wrote:

Maybe try an OS with more uptime I've no idea re the fault, best to
ask on sci.electronics.repair.

A little more infomation perhaps?
Anything on the screen, does it do the initial POST, any error
messages?

Sorry. Absolutely nothing. The power light comes on, but the screen
does not react. No messages, no beeps, nothing.
--
Graeme

 

[NT]

On Apr 13, 2:41 pm, News <Gra...@nospam.demon.co.uk> wrote:

In message
2d050ddc-c670-4eec-a925-37bc52f56...@b14g2000vbz.googlegroups.com>, NT
meow2...@care2.com> writes

On Apr 13, 2:06 pm, News <Gra...@nospam.demon.co.uk> wrote:

When shut down, for any reason, it will not restart until the battery
has run down, and I mean completely flat.  Every little volt.  Removing
the battery does not help - the battery has to be in place, but
completely expired, which normally takes a couple of days.  Then, with
the charger plugged in, it will boot normally and run perfectly, either
from battery or mains until the next upgrade/shut down.

Maybe try an OS with more uptime

grin>  Perhaps strangely, uptime has never been a problem.  The only
time I reboot is following installation of MS updates.

I've no idea re the fault, best to
ask on sci.electronics.repair.

OK, thanks.

It sounds like uptime is one half of the problem. Frequent updates
result in downtime each time. Hopefully you've fixed it now, if not
though I'd simply switch off autoupdates if its not a security
critical machine, or if it is, try a few linux live CDs to see if
something more stable suits you. Mint 7 is a good replacement for xp,
and can happily keep running weeks at a time with a 2G swap partition
(the bigger the swap, the more uptime). Support has ended for 7, so no
updates, and seldom any reason to reboot.


NT

 

[Winston]

News wrote:

In message <84cgo7dbgp0dv5u4tm32h4gjbdk0cijmb6@4ax.com>, Graham.
me@privacy.net> writes
On Fri, 13 Apr 2012 06:18:22 -0700 (PDT), NT <meow2222@care2.com
wrote:

Maybe try an OS with more uptime I've no idea re the fault, best to
ask on sci.electronics.repair.

A little more infomation perhaps?
Anything on the screen, does it do the initial POST, any error
messages?

Sorry. Absolutely nothing. The power light comes on, but the screen does
not react. No messages, no beeps, nothing.

Personally I dunno. Apparently others have gotten their units to boot
by freezing them (in a real freezer) before booting up.

This looks interesting from
http://www.techsupportforum.com/forums/f108/toshiba-nb200-wont-boot-492391.html:

" Re: Toshiba NB200 won't boot
I have found a fix for this. I do computer repair for a living and have now
repaired two nb200's with this fault. Here's how:

1) Get the computer to post and boot. There's a few ways to do this if it will NEVER post. You can leave the computer
off for around 2 months. I had one which never posted no matter what I tried. After leaving it sit around for about 2
months, I tried again and it posted and booted, but once it warmed up again it wouldn't post again. You can also try
putting it in your car overnight to cool it down, or lastly you can try the freezer trick. Once you have it booted to
windows, DON'T restart or power down as it may not post again.

2) Download the latest BIOS update for your NB200 which is v2.1. Make sure it's for the correct part number which can be
found on the back of your nb200.

3) Connect your power lead and make sure the nb200 has at least 50% charge.

4) Install the v2.1 BIOS update.

Both nb200's I have repaired like this would only post intermittently before this v2.1 BIOS update. As I mentioned, 1 of
them wouldn't post at all for two months. Both nb200's were initially running the v1.2 BIOS. Immediately after this v2.1
update, both nb200's post and boot every time, even when i have left them running near a heater in a hot room. Basically
fixed.

You can find out what BIOS version you have on the main page of the BIOS setup screen.

So, get it to boot, and flash to the latest bios update."



--Winston

 

[News]

In message <jmnl7g0131a@news6.newsguy.com>, Winston
<Winston@Bigbrother.net> writes

This looks interesting from
http://www.techsupportforum.com/forums/f108/toshiba-nb200-wont-boot-4923
91.html:

Thanks for that. Yes, I followed that advice, upgraded the BIOS and it
has behaved perfectly since then.

Cheers,
--
Graeme

 

[Paul D Smith]

"News" <Graeme@nospam.demon.co.uk> wrote in message
news:hY+GiwHLd6jPFwax@nospam.demon.co.uk...

In message <jmnl7g0131a@news6.newsguy.com>, Winston
Winston@Bigbrother.net> writes

This looks interesting from
http://www.techsupportforum.com/forums/f108/toshiba-nb200-wont-boot-4923
91.html:

Thanks for that. Yes, I followed that advice, upgraded the BIOS and it
has behaved perfectly since then.

Both the solutions (freeze or leave for long time) sound like ways of
clearing the BIOS (freezing car radios used to be a way to clear their
security codes!).

If there is an accessible battery (probably not) then pull it and leave for
a week might do the same job. Or there may even be a way to force clearing
the BIOS on boot.

Paul DS