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Baking a 7970, what temperature is needed reflow solder?

post #1 of 3
Thread Starter 
I have a heavily artifacting XFX 7970 Black Edition and a dead MSI Twin Frozr 6950. Both cards have no warranty.

I tried baking the 7970 following directions that people have claimed to work, but on older GPU's. The temperature given in the tutorial i followed was too low to reflow the solder (no 'melting solder' smell was observed at all during the baking procedure).

I read somewhere that the solders used in newer graphics cards use RHoS compliant types of solder that have a higher melting point than standard tin/lead solder.

Has anyone ever baked a 7000 series GPU with any success? :/ If anyone has any information about what temps would be required and how long a card would need to be in the oven for.

Both these cards are just as useful as paperweights and it would be awesome if they could be resurrected! biggrin.gif
post #2 of 3
Graphics cards have had RHoS solder for many years now, its really not a new development. What kind of temp did you use when you tried to bake the card? Usually 200C is the usual setting (I have heard some say 220C is needed for some solders), times vary but the way I see it 5min should be enough thou some say 10 or even 15min. You did remember to let the oven reach the set temp before sticking the card in?
    
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CPUMotherboardGraphicsRAM
i7 920 OC 4.0 GHz 1.35v HT on Asus P6T 1366 SLI Gigabyte GTX 970 OCZ 12GB DDR3 GOLD/Platinum mix 
Hard DriveHard DriveHard DriveHard Drive
Samsung Spinpoint F1 1TB Western digital 300GB Western digital Caviar Blue 1TB Samsung 840 EVO 250Gb 
Optical DriveCoolingOSMonitor
generic LG DVD WC'd , Supreme LT, NexXxoS Xtreme III 360, Phob... Windows 7 x64 Samsung 27" LED S27A550B 
MonitorMonitorKeyboardPower
ACER 23" x233H Dell U3415W Logitech G11 Chieftec 850W 
CaseMouseMouse PadAudio
Phanteks enthoo luxe Razer deathAdder respawn steelseries Qck Yamaha HTR-6130 AV Receiver 
AudioAudio
Yamaha NS-50B floor tower speakers miditech Audiolink II stereo sound card 
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post #3 of 3
Thread Starter 
Quote:
Originally Posted by Bit_reaper View Post

Graphics cards have had RHoS solder for many years now, its really not a new development. What kind of temp did you use when you tried to bake the card? Usually 200C is the usual setting (I have heard some say 220C is needed for some solders), times vary but the way I see it 5min should be enough thou some say 10 or even 15min. You did remember to let the oven reach the set temp before sticking the card in?

I did it quite a while ago, I think i may have followed this tutorial which recommends 196C (converted from the very specific 385F...) :

http://lifehacker.com/5823227/save-dying-video-cards-with-a-quick-bake-in-the-oven

It was something close to 200 C. I am sure we let the oven pre-heat but didn't use anything to check the real temp, just trusted to oven dial was correct. Card was baked for 10 minutes.

Should we just try again at a higher temperature? And should the smell of solder be a good indication of whether the oven is hot enough/when to stop and take the card out? Might try at 210C and see what happens and stick the 6950 in first as its the more worthless card in it's current condition.
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