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Question About Laptop GPU Reflow

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February 27, 2013 4:25:32 PM

Hey I have a HP DV 9000 that I am planning on reflowing it and I have a question.(I am using this laptop until I get my new desktop in July) If I am successful, whats stopping it from overheating again? I planning on buying thermal paste, but what else can I do to prevent this from happening again?

Thanks
a b D Laptop
February 27, 2013 4:33:12 PM

Would like to know as well... I had to bake my 8800GTX three times over the course of 18 months to keep it alive. I'm thinking that once you start having problems that it's just a matter of time til they reappear since baking is a bandaid, not a repair.
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a b D Laptop
February 27, 2013 4:33:15 PM

i believe some people used a copper gpu shim to help after the gpu reflow trick

just look on youtube should be plenty guides there

but as said its probably only going to be a temporary fix unless its professionally re-balled
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a c 249 D Laptop
a b α HP
February 27, 2013 5:11:18 PM

Hi :) 

My company uses a High temp bonding adhesive after refloating...

But yes any machine that needs it is HIGHLY LIKELY to need it again.... only partial answer is to keep it as cool as possible...cooling pad etc or extra external fans..

All the best Brett :) 
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February 27, 2013 5:24:47 PM

J_E_D_70 said:
Would like to know as well... I had to bake my 8800GTX three times over the course of 18 months to keep it alive. I'm thinking that once you start having problems that it's just a matter of time til they reappear since baking is a bandaid, not a repair.


My thoughts exactly I figured I would have to do it a couple of times.

So I can bake my motherboard to reflow it? Is it safer than using a heat gun because I'm planning to buy a cheap $15 heat gun.
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February 27, 2013 6:13:22 PM

Brett928S2 said:
Hi :) 

My company uses a High temp bonding adhesive after refloating...

But yes any machine that needs it is HIGHLY LIKELY to need it again.... only partial answer is to keep it as cool as possible...cooling pad etc or extra external fans..

All the best Brett :) 


Seems interesting. I heard cooling pads don't work that well and only drop temperatures by around 5 degrees C.
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February 27, 2013 6:22:59 PM

Can someone help I am going to buy thermal paste and copper shims for the GPU and CPU. What dimensions do the copper shims have to be for both CPU and GPU? Also do I apply the thermal paste directly to the CPU and GPU? Lastly can I use the mother board baking method or should I get heat gun?

Thanks
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a b D Laptop
February 27, 2013 6:29:15 PM

Neeliyo said:
Seems interesting. I heard cooling pads don't work that well and only drop temperatures by around 5 degrees C.



5c could be the difference between the solder breaking down or not
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a b D Laptop
February 27, 2013 6:32:10 PM

Neeliyo said:
Can someone help I am going to buy thermal paste and copper shims for the GPU and CPU. What dimensions do the copper shims have to be for both CPU and GPU? Also do I apply the thermal paste directly to the CPU and GPU? Lastly can I use the mother board baking method or should I get heat gun?

Thanks


copper gpu shim

http://www.ebay.co.uk/itm/NEW-Copper-Pad-Shim-HP-DV9000...

have seen people use either bake or heat gun

yes thermal paste directly to cpu / gpu
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February 27, 2013 7:02:50 PM

I live in Canada can I still buy from UK?
Also how long do I reflow with a heat gun or bake? Which one is safer and easier baking or heat gun?

Thanks
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a c 249 D Laptop
a b α HP
February 27, 2013 7:05:53 PM

Neeliyo said:
I live in Canada can I still buy from UK?
Also how long do I reflow with a heat gun or bake? Which one is safer and easier baking or heat gun?

Thanks



Hi :) 

I hate to say this and you are welcome to try, but even by asking those questions, gives you around a 90% chance of it not working (wrecked lappy) :( 

All the best Brett :) 
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a b D Laptop
February 27, 2013 7:18:35 PM

Neeliyo said:
I live in Canada can I still buy from UK?
Also how long do I reflow with a heat gun or bake? Which one is safer and easier baking or heat gun?

Thanks


yes you can get it delivered to canada just scroll to the bottom of the listing and get postage for canada

though should be able to get them of canadian ebay or usa ebay as well

and as brett suggests you need to read up on this a bit more

worst case you ruin the laptop--best case you fix it

but watching some youtube will make things much clearer

just search youtube for hp gpu reflow/repair that should give plenty results to help you

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February 27, 2013 8:31:31 PM

You guys are worrying me. I searched youtube for a long time but there isn't any info on how long or what temperature to heat it at. I have heard many people were successful which is why I'm concerned.
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a b D Laptop
February 27, 2013 8:41:01 PM

I did the GPU at 385 for 10 minutes (did 8 the first time) but no idea if those number work for a whole mobo (might fry other components a GPU doesn't have?).
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February 27, 2013 8:48:56 PM

J_E_D_70 said:
I did the GPU at 385 for 10 minutes (did 8 the first time) but no idea if those number work for a whole mobo (might fry other components a GPU doesn't have?).


yea I heard you may melt some plastic comments. D:
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February 27, 2013 9:54:17 PM

Any other thoughts bake or heat gun?
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a b D Laptop
a b α HP
February 27, 2013 10:21:27 PM

For a proper reflow, you need a good flux, either liquid or paste, RMA 223 is what I use for paste. You need a proper thermal probe, or rather 2, to monitor the bottom of the board under the GPU and one to monitor the PCB of the GPU. You need to get it approx. 223C in order to get the lead-free solder to melt and hold it steady at those temps for about 15 seconds as lead-free solder starts to melt at 217C. 225C and up, you will start to de-laminate the GPU itself and destroy the traces inside of it or melt the solder to the point it becomes fully liquid and bonds with other solder balls under the GPU and create a bridge.

For reference, I reflow laptops, 360's, and PS3 and have reballed the chips with lead solder on the above mentioned items. I have a $2000 reflow machine, and another $500 at least in misc equipment for it. The flux I buy is $20 a tube.

Your chances of doing a successful reflow with a heatgun or oven and hitting the 217-223 window for 15 sustained seconds without going over are about as good as sleeping with a supermodel. In reality, you either A, won't hit the proper temp, it will temp fix it for a few weeks to a month or two and the break again, or B, you will hit too high of temps (easy with a heatgun as they go up to like 700C) and you will melt/destroy the chip. A proper reflow also needs the entire board heated up to around 190C and then the chip in question heated so there is no thermal shock between the bottom of the board or surrounding area with it being room temp and the chip being 223C, so a preheater of some sort is also needed for a proper reflow.

You can not believe me and get a $15 heat gun and believe youtube. I've only fixed 1500+ consoles by reflowing and even with my fancy machine and equipment, there is probably another 500 I couldn't fix.

I would say if you're determined to do this, try the over, less chance to screw it up. Ditch the copper plates, they will make no difference. Oven it and when it dies again in a few months, ditch it for good
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February 28, 2013 1:23:34 AM

getochkn said:
For a proper reflow, you need a good flux, either liquid or paste, RMA 223 is what I use for paste. You need a proper thermal probe, or rather 2, to monitor the bottom of the board under the GPU and one to monitor the PCB of the GPU. You need to get it approx. 223C in order to get the lead-free solder to melt and hold it steady at those temps for about 15 seconds as lead-free solder starts to melt at 217C. 225C and up, you will start to de-laminate the GPU itself and destroy the traces inside of it or melt the solder to the point it becomes fully liquid and bonds with other solder balls under the GPU and create a bridge.

For reference, I reflow laptops, 360's, and PS3 and have reballed the chips with lead solder on the above mentioned items. I have a $2000 reflow machine, and another $500 at least in misc equipment for it. The flux I buy is $20 a tube.

Your chances of doing a successful reflow with a heatgun or oven and hitting the 217-223 window for 15 sustained seconds without going over are about as good as sleeping with a supermodel. In reality, you either A, won't hit the proper temp, it will temp fix it for a few weeks to a month or two and the break again, or B, you will hit too high of temps (easy with a heatgun as they go up to like 700C) and you will melt/destroy the chip. A proper reflow also needs the entire board heated up to around 190C and then the chip in question heated so there is no thermal shock between the bottom of the board or surrounding area with it being room temp and the chip being 223C, so a preheater of some sort is also needed for a proper reflow.

You can not believe me and get a $15 heat gun and believe youtube. I've only fixed 1500+ consoles by reflowing and even with my fancy machine and equipment, there is probably another 500 I couldn't fix.

I would say if you're determined to do this, try the over, less chance to screw it up. Ditch the copper plates, they will make no difference. Oven it and when it dies again in a few months, ditch it for good


So don't take any chances if I don't know what I am doing or have the right equipment?
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a b D Laptop
a b α HP
February 28, 2013 1:31:35 AM

Neeliyo said:
So don't take any chances if I don't know what I am doing or have the right equipment?


My opinion, no. I see so many 360's or PS3's come in AFTER someone tried to heatgun them and 80% of the time, I can't fix them anymore.
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February 28, 2013 6:42:43 PM

So what should I do sell it?
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February 28, 2013 10:15:14 PM

Best answer selected by Neeliyo.
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a c 249 D Laptop
a b α HP
February 28, 2013 10:18:58 PM

This topic has been closed by Brett928S2
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