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HD 4870 PCI-E surface mount component replacement

post #1 of 5
8/24/12 at 5:57am
Thread Starter 
Hi, I recently bought a faulty HD 4870 from ebay. The seller said that the card does not work in a 16x slot but works in 4x etc. I thought that it was their motherboard at fault so bought the card. When I tested the card, I found that the seller was correct, it doesn't work in a 16x slot (computer POST's but no display). The PCI-E connector on the card was not shorted anywhere because the card worked when run in a slot wired for 16x but set to run in 4x mode. When I swapped the card to a different slot on the board, I noticed damage to the surface mount components above the PCI-E slot.


They are labelled C80, C82 and C83 so I think they are capacitors.
I was wondering if it would be possible to replace these capacitors with those from another PCI-E graphics card (I have an old 8800GTX lying around which is beyond repair) I would use components from the same part of the board. Am I right to assume that because they are part of the PCI-E connection that they will have the same values?

Thanks in advance.
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post #2 of 5
8/24/12 at 6:57am
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yes indeed.. just remove and replace.. you only need connection, and not very specific values for those cap's thumb.gif

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post #3 of 5
8/24/12 at 7:10am
Thread Starter 
Thanks for your help, I'll update when fixed
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post #4 of 5
8/24/12 at 2:39pm
  • Artikbot
  • It's not an arrow. It's a... Pencil!
I've done that several times, albeit on older cards (that's what I bench xD). Just pick one of the same size and done tongue.gif
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post #5 of 5
8/29/12 at 5:07am
I've actually fixed similar damage my tearing off the caps completely and using conductive paint. Wouldn't rely on this for a good card, but it works more often than not.
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