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Oven Baking a 6870 - [Success!] (And more cards!)

Mussels

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So my waifu was playing reign of kings on her reference 6870 when poof, black screen.


Sadly the card appears to be 90% dead - i get an image in the BIOS and the windows loading bar, but as soon as drivers load/changes to native res of the monitor i get a black screen and the system freezes (no sounds, etc)

I'm happy to oven bake it, but last time i tried this i kinda melted the card and had no success.

Please advise on what temperatures to use (IN CELCIUS), and for how long - and any neccesary steps (remove cooler etc)
 
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So my waifu was playing reign of kings on her reference 6870 when poof, black screen.


Sadly the card appears to be 90% dead - i get an image in the BIOS and the windows loading bar, but as soon as drivers load/changes to native res of the monitor i get a black screen and the system freezes (no sounds, etc)

I'm happy to oven bake it, but last time i tried this i kinda melted the card and had no success.

Please advise on what temperatures to use (IN CELCIUS), and for how long - and any neccesary steps (remove cooler etc)

@Toothless is our resident baker.

Advice, remove everything that isn't screwed down. Ideally you just want the PCB only, no soft plastics liable to melt. Put alluminium foil over any heat sensetive components (video inputs are plastic, need covering). Wipe off any TIM and thermal pads.

Temperature, 195C - 205C, 8-12 minutes. (Ideally 210-215, but don't do this unless you're relatively experienced)
Open the oven and allow the fumes to aerate out of the oven for 5 mins. Don't make any sudden movements (or a cap might fall off if you bump it). Allow the solder to harden up again do not fan cool.

EDIT: Solder solid to liquid temperatures

Sn-3.5Ag 219.1C
Sn-3.5Ag 219.5C
Sn-3.5AG-0.7 nanoCu 215.0C
Sn-3.5Ag-3.0 nanoCu 213.6C
 
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Might I add: don't forget to clean the card of any thermal paste residue and remove any thermal pads and remove the support bracket.

Maybe you could post pictures of the process? It would bring back lots of nice memories :D
 

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@RCoon has it down, but do skin and clean before baking or bad things will happen.

Somehow I knew I'd be brought into this thread.
 

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@RCoon has it down, but do skin and clean before baking or bad things will happen.

Somehow I knew I'd be brought into this thread.


skin and clean?


oh and one question: should i be pre-heating the oven, and then putting this in on a hot or cold tray?
 

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Heatsink, thermal pads, plastic, and clean the paste off.

yep, too easy. i'll do it in a few hours as we're about to cook food in the oven, will take pics along the way.
 
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skin and clean?


oh and one question: should i be pre-heating the oven, and then putting this in on a hot or cold tray?

Cool tray, pre-heat the oven. put tray in (GPU die facing up, so solder is along the bottom face) after pre-heat is done, leave for 10-12 mins.
 

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Depending in if it's lots of plastic connectors on it and how they're located you can use rolled up thin metal foil to raise the card. Shouldn't be necessary on a GPU but comes in handy if you're doing a laptop motherboard.
 

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card should be placed on oven tray so it sits level ...... in both planes ie level north /south and level east/west you don't want solder flowing just melting
 

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Just in case she don't make it, heres the before pics




 
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actually you need soldering flux also....
 

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Good luck.

 

dorsetknob

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and if she Don't make it this is how i imagine the conversation will go in your house hold

She "So its Still broken eh Fat lot of good that Done"

He " I had to Try, They Gave Good Advice"

She "So what now. whats the use you being a moderator on that site if you can;t get a free video card Does'nt **** review graphic Cards they Send him free Cards to Review"

He "Hun it dont work like that" ( as he gets the sleeping bag sorted on the couch )
 
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you shouldn't need flux, your re-wetting dry joints. All flux is going to do is cause your solder points to run. Chances are they used a eutectic solder. Meaning it'll go solid to liquid at a very specific temp. then go back to solid again at a specific temp. It should not have the semi solid phase.

The European standard would be one of the Sn 95.x solders. The most common been Sn95.5Ag3.9Cu0.6 having a melting and hardening point of 217 Celsius (eutectic). The Asia standard is a little different and is 221 Celsius (eutectic).


Setting the oven to 225 and keeping an eye on it should yield good results you still need to go past the liquid point, but you only want it there for as short a time as possible, And you want the airflow over the board to be as even as possible. The reason you know it'll be a eutectic solder is because anything else will aid component slip on surface mounts, So they avoid it to increase yields.

Keep an eye on the board (clean your oven door). When the larger points go bright silver or start to deform slightly your cooked.
 
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Use a heat gun. It works better. And flux if you have it. On the back of the chip. Heat until you see the silver shine
 

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Not every one has a Heat gun Most of us have Ovens even single men (they may not know what they are for)
I can make a real mean roast for being a single man.
 

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I can make a real mean roast for being a single man.

Being Able to Cook is a good thing
That Bird you pull if you impress her with your cooking may result in you no longer being single :)

@Jetster Try cooking a roast with a Heat gun
 
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You should have a heat gun. $25. Its a vital tool for many projects. And it makes great grilled cheese
 
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You should have a heat gun. $25. Its a vital tool for many projects. And it makes great grilled cheese

Without underneath preheater that heat gun is useless killer tool, it will pop up the PCB layers. Heatgun can only be used with preheating.
 
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Without underneath preheater that heat gun is useless killer tool, it will pop up the PCB layers. Heatgun can only be used with preheating.
Done it a few time with sucuss. Never could get the oven method to work
 
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Done it a few time with sucuss. Never could get the oven method to work

Well as you see I also don't do oven method at home, just put the board over electrical heater for 15mins and take it off as soon the soldering iron melt. I am retarded enough to touch the GPU and poke it a bit too when it is all liquid. At work - Infrared preheater and hot air from above... otherwise the death ratio is way too high, the PCB pops if too much energy is applied in one point, it depends on the treated subject thou, but some boards are prone to burning.
 
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