an Expert to resolder nvidia chip ?

M

miciotta62

n00b
Joined
Sep 22, 2009
Messages
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i have a HP pavlion DV6xxx pc notebook...

the screen is dark and in some forum say is the nvidia
chip desolder....the balls !!!

NOW, in how mode i try to resolder ?

i have the air-flow ....

at what temperature ? 400 F or ?

and at what time 5 minuets or ?

an very big expert oto help me ? hi....:confused:
 
you cant do it your self.. this is something that can only be done by the factory.. so your only choice is to either use the warranty or get a new laptop..
 
I'm going to have to say your SOL, and your going to have to have it sorted out by HP, if its still covered by the warranty (or extension based on the 8600m problems).
 
DedEmbryonicCe11 said:
Balls...?
Maybe they meant BGA:
http://en.wikipedia.org/wiki/Ball_grid_array

That isn't a project you can do yourself. Is the warranty expired?
Click to expand...

Sounds like it wouldn't be hard if you had the equipment... heat it to desolder it, yank it off, clean all the old solder off, reaffix new balls, slap it back on, and heat appropriately to solder it back... Since it sounds like he has the equipment (I'm assuming that "i have the air-flow" means that he has a hot-air station available), I don't see any reason he couldn't do it himself... if he knew what settings to use. (melting the PCB would be bad :p)

Anyways, miciotta62, good luck finding the info!
 
i contact HP but not recognized to me the extended warranty ! BAD HP !!!

now, i very expert in this forum to help me ?:confused:

a friend have the air-flow station....


what chip (nvidia) is to hot with air flow ? the number 1 or 2 ?
in this photo:

http://i33.tinypic.com/of6djb.jpg


for the black lcd screen on HP pavilon DV6xxx what is the chip ?
nvidia or ???

and in how mode to hot it ?

at 400 F grade or ? and on the top of the case of chip or bottom in the PCB ?
and for what minutes the air hot ? 2-3 or 5 minutes ?

please help me .....:rolleyes:
 
open your laptop up and post what it says on the chips. it is impossible to tell from a blurry picture.
 
few things.

1. That is not going to be easy to do with no experience. Even with right equipment, it would be a pain to do. Which brings me to point 2.

2. A DV6000 motherboard seems to only go for about $100 US dollars on ebay. The time you spend trying to fix it, you might as well buy a new mobo. Time is money.

3. This should probably be number 1, before you even consider 1 and 2, are you sure it has to do with the chip solder coming loose? I'm not sure how the solder coming loose might make the screen dim. Sounds like you might need a new LCD inverter.
 
is a problem on this hp pavilion series ...try to hp web side !

is start with wi-fi module dead and now the screen...

is not the inverter.... when i start windows it BEEP for 3 time !
is the nvidia chip desolder !

in some world wide web site forums talk about this HP bug !

i whant yo try to air-flow the chip at what time (minutes) and
temeparature ?

an expert help me ..please ?:confused:
 
miciotta62 said:
i have a HP pavlion DV6xxx pc notebook...

the screen is dark and in some forum say is the nvidia
chip desolder....the balls !!!

NOW, in how mode i try to resolder ?

i have the air-flow ....

at what temperature ? 400 F or ?

and at what time 5 minuets or ?

an very big expert oto help me ? hi....:confused:
Click to expand...

No one is going to "resolder" a chip. If it's defective, it either goes to the warranty service so that you can get a new one or, if the warranty is not in effect, there's not much you can do, although if the defective component is a discrete GPU, you can buy a new one or if it's integrated, you can buy a new motherboard. But this is always more "complicated" for a laptop...

When you read about the problem, what do you mean by "chip resolder" ? Do you mean "defective chip" ? What graphics card does the pavillion dv6xxx have ? If it's a 8400m or 8600m, your problem may be related with a known problem with the chips in those cards, that will cave in faster than others, to high temperatures. If that's the case, and you do have one of these graphics chips, talk with HP again and explain the problem properly.
 
No need to resolder anything.

You just need a toaster oven an some aluminum foil.

If you are willing to take the risk I can tell you how to do it.
 
If your video card is MXM-II spec you might have some hope in getting a new video card for your laptop, but given HP's design and penchant to be proprietary-as-hell, this route is highly unlikely.

Still, do some research.
 
Sounds like it wouldn't be hard if you had the equipment... heat it to desolder it, yank it off, clean all the old solder off, reaffix new balls, slap it back on, and heat appropriately to solder it back... Since it sounds like he has the equipment (I'm assuming that "i have the air-flow" means that he has a hot-air station available), I don't see any reason he couldn't do it himself... if he knew what settings to use. (melting the PCB would be bad :p)
Click to expand...
BGA = Ball Grid Array.

These style of IC's have little solder balls on the bottom side, they are put through a big oven during manufacturing that causes them to bond to the PCB. Sometimes there are problems in manufacturing, cold solder joints, and they lose continuity over time.

You wouldn't remove it and clean off, ideally you would want to reflow the solder. Heat it back up so it flows and can restore the bonds between the IC and the PCB.

A tech lab would do this with a heat gun, a more focused, higher powered hair dryer type device, if the device was small, memory component for ethernet phy. Larger components may need more specialized manufacturing equipment.

Some amateurs have managed the same effect at home with an oven.

Stoly said:
No need to resolder anything.

You just need a toaster oven an some aluminum foil.

If you are willing to take the risk I can tell you how to do it.
Click to expand...
This. But risky. If in warranty, would do that.
 
Last edited:
miciotta62 said:
i contact HP but not recognized to me the extended warranty ! BAD HP !!!

now, i very expert in this forum to help me ?:confused:

a friend have the air-flow station....


what chip (nvidia) is to hot with air flow ? the number 1 or 2 ?
in this photo:

http://i33.tinypic.com/of6djb.jpg


for the black lcd screen on HP pavilon DV6xxx what is the chip ?
nvidia or ???

and in how mode to hot it ?

at 400 F grade or ? and on the top of the case of chip or bottom in the PCB ?
and for what minutes the air hot ? 2-3 or 5 minutes ?

please help me .....:rolleyes:
Click to expand...
IC #1 is likely the northbridge, that is only a guess based on proximity to the CPU.

Therefore; IC #2 is likely the nVidia GPU.

400F sounds about right. It's hard to guess how much heat it would take to flow, it really depends on board design, how much copper is in there, how heavy the ground and power planes are that sink heat. I would start in smaller increments. It's been a long time, but I don't think it takes in the realm of minutes. Make sure you fully preheat your re-soldering equipment, so it's at full operating temperature.

I'd heat the parts up for 15 seconds, then test the board (yes, I know this is probably tedious reassembly the laptop to working state to verify, but patience and diligence is advised)

Then 30 seconds then test, then 45, then 1min, etc.

Too long and the heat could cause other problems to the PCB, the IC or the traces.
 
Hahaha...

He hears that his dim screen MIGHT be caused by a loose GPU somehow, and now we're trying to help him re-solder it?

What are the odds that his issue really is caused by the aforementioned? A loose GPU? Really? How do we know this? It sounds like some online speculation rather than a firm diagnosis.

When did we rule out other issues? The guy who said to turn up the brightness had the right idea...although it'd be incredibly sad if that were the solution.

Oh well... I suppose he says this is some known HP bug... that's a pretty bad bug. Maybe he is right.

I guess the [H] crowd couldn't pass up the fun of seeing this transpire though :D
 
KaptainKhaos said:
for some reason i don't think this will end well ;)
Click to expand...

That is what I am thinking...





Resoldering/reflowing even just a tiny section on a laptop motherboard, is worse then tricky. There are about 400isd balls to melt into position, and while you are at it, you must not excede the 130C (rough estimate, based off of rebranded 8xxx series desktop GPU units) tolerance of these chips.

If your friend has a 'hot air' station, the he/she probably would be the more knowledgeable source for information on how to reflow your motherboard.

What language do you speak natively? You english is broken, at times!

Good luck!
-Jeremy
 
the temperature tolerance of a chip is only when there is electricity flowing through it as far as i know. either way its a very big shot in the dark as to if a reflow would even work.
 
sorry for my bad english....

for all : yes is a know BAD project of HP for ALL models
notebook series Pavilon DV !

in all forums say this fault or of the wi-fi module or the black screen!
and in the home page of HP it extended the WARRANTY... but
not for me! VERY bad HP !!!:mad:


for Menelmarar

the best way to reflow (NOT reballing) this nvidia chip ( chip n.2 in my photo)

is:

- oven at 400 F for 5 minutes all the mobo pbc unit .

- or reflow with air-flow station directly on this chip ?

why the best way ?

is is the air-flow at 400F or ? and for what minutes on the chip ?
but IMPORTANT the hot air-flow directly on the chip case or
in the bottom of the down pcb?

thanks for help me:rolleyes:
 
miciotta you're lying if you're saying HP won't cover the recall. I'm a PC Tech and I've warranteed maybe 10 of these things so far this year. You just don't want to wait for them to mail you a replacement.
 
you lyng !

i have contact directly HP via e-mail , phone and FAX...

after 2 weeks it telephone me and say that my notebook
HP pavlion dv6141 is not in warranty !

OK ????????????????

bad service HP... my pc have ONLY a 2 year and 6 month and
is DEAD !:mad:
 
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