HD 4870 X2: artifacts after changing thermal paste

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  1. Chalky Emultion
    Posts : 760
       New #1

    HD 4870 X2: artifacts after changing thermal paste


    Hi,
    today i opened my HD 4870 X2 and I cleaned it, also replacing the old thermal paste with a new one (99% silver)

    but now, when i reinstalled my card in my pc, it shows artifacts immediatly after i turn it on, during BIOS post, during windows loading, etc...

    What could be happened?
    (I tested a GTS 450 in this pc and it works perfectly)
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  3. Erick Aguilar
    Posts : 679
    Windows 7 professional X64
       New #2

    Perhaps the card was handled unproperly and a bit of static was discharged into the PCB.
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  4. Chalky Emultion
    Posts : 760
    Thread Starter
       New #3

    Erick Aguilar said:
    Perhaps the card was handled unproperly and a bit of static was discharged into the PCB.
    So is it damaged permanently?
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  6. Erick Aguilar
    Posts : 679
    Windows 7 professional X64
       New #4

    Dorado said:
    Erick Aguilar said:
    Perhaps the card was handled unproperly and a bit of static was discharged into the PCB.
    So is it damaged permanently?
    That is what static can do unfortunately.
    Try to apply the thermal paste again and be careful assembling it. Be sure to touch a power supply that is running to discharge yourself. The casing, NOT the inside, or cables, or anything else, just the metal encasing.
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  7. Chalky Emultion
    Posts : 760
    Thread Starter
       New #5

    Erick Aguilar said:
    Dorado said:
    Erick Aguilar said:
    Perhaps the card was handled unproperly and a bit of static was discharged into the PCB.
    So is it damaged permanently?
    That is what static can do unfortunately.
    Try to apply the thermal paste again and be careful assembling it. Be sure to touch a power supply that is running to discharge yourself. The casing, NOT the inside, or cables, or anything else, just the metal encasing.
    I cleaned the card with 90% alcool... I removed all the thermal paste... should i test it now?
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  8. Erick Aguilar
    Posts : 679
    Windows 7 professional X64
       New #6

    Dorado said:
    Erick Aguilar said:
    Dorado said:

    So is it damaged permanently?
    That is what static can do unfortunately.
    Try to apply the thermal paste again and be careful assembling it. Be sure to touch a power supply that is running to discharge yourself. The casing, NOT the inside, or cables, or anything else, just the metal encasing.
    I cleaned the card with 90% alcool... I removed all the thermal paste... should i test it now?
    -Without- the paste? No. Unless you want to destroy the card.
    Apply the paste again. What kind of alcohol did you use? Some alcohols are more corrosive than others.
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  10. Chalky Emultion
    Posts : 760
    Thread Starter
       New #7

    Erick Aguilar said:
    Dorado said:
    Erick Aguilar said:

    That is what static can do unfortunately.
    Try to apply the thermal paste again and be careful assembling it. Be sure to touch a power supply that is running to discharge yourself. The casing, NOT the inside, or cables, or anything else, just the metal encasing.
    I cleaned the card with 90% alcool... I removed all the thermal paste... should i test it now?
    -Without- the paste? No. Unless you want to destroy the card.
    Apply the paste again. What kind of alcohol did you use? Some alcohols are more corrosive than others.
    common alcohol...
    Now should I use a non-conductive thermal paste?
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  11. Erick Aguilar
    Posts : 679
    Windows 7 professional X64
       New #8

    Dorado said:
    Erick Aguilar said:
    Dorado said:

    I cleaned the card with 90% alcool... I removed all the thermal paste... should i test it now?
    -Without- the paste? No. Unless you want to destroy the card.
    Apply the paste again. What kind of alcohol did you use? Some alcohols are more corrosive than others.
    common alcohol...
    Now should I use a non-conductive thermal paste?
    That is entirely your decision. If you use it, you don't have to care a lot about it spreading out of the GPU and into the PCB. If it is metal based then you should be careful it doesn't go in contact with the PCB.

    I don't have experience with them, but from what I've read it could cause shorts.
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  12. Chalky Emultion
    Posts : 760
    Thread Starter
       New #9

    I replaced the thermal paste, I reinstalled the graphics card, but I always see artifacts...
    Windows loads normally, but nothing appears on the display... Only the BIOS post with these artifacts.

    My 4870 X2 is officially dead... Maybe it could work in QuadFire with another HD 4870 X2, but i can't test it...

    I returned to the "old" GeForce GTS 450...

    Every AMD card I owned (Radeon VE 64MB AGP, Radeon 9600 AGP, Radeon HD 3450 AGP, Radeon X300, Radeon X1650 SE, Radeon HD 5670 and finally Radeon HD 4870 X2) gave me a problem... I will NEVER buy another time an AMD card!
    Only my laptop's Radeon 9000 IGP is working perfectly... LOL!
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  13. Erick Aguilar
    Posts : 679
    Windows 7 professional X64
       New #10

    Well, those are not the best cards in the world.

    I've never had an issue with my AMD cards. Or Nvidia for that matter, but I prefered AMD by far.
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