Does EK have GTX280 and HD4870 FC blocks coming soon ?

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Can someone give me some advice. I have been building systems and watercooling for years and have never had any major problems. This weeks I bought three EK Waterblocks for my three GTX 280 cards, which I have been running on air in tri-sli. I fitted the blocks (carefully I thought) and put them back in my loop. I always run the loop first to ensure no leaks then attach the cards to the motherboard. After a day of leak testing I was horrified to find only one of the three cards was working. I have now tested each card individually and confirmed that only one is working, the system will not even boot with the other two!! Before I buy two more cards does anyone have any ideas or hints as to what I did wrong. BTW I have now ordered three EK Alu backplates from EK.

One of your cards works, so there must be something wrong to the installation on the others.

If there were mis-contact, it should still run 1-2 minutes from cool before the system shut down by itself (8800 does that, and GTX280 is not hotter than 8800 on idle). Have you noticed any burnt mark/smell? Suggest try back the stock fan block to see if they can still operate first.