I concur with Fastboy, Nickolp1947 and Llamadal.
I won't be buying Raijintek stuff any time soon after their product giving someone so much headache and their failure to take responsibility. And that goes for all their products now, not just the liquid coolers.
First time I'm not impressed with OcUK as well. Given OcUK established that there was coolant on the board, it's not good enough to take the position that now that they cleaned it and tested it and it worked then, then any further, immediate problems must be due to something else? What the hell? That's like people who were at Ground Zero on 911 inhaling all the asbestos being told "we're not going to help you with your illness because on that day you were alive."
Good customer service is: "Sorry to hear that it doesn't work on your end, sir. Have you tried the following? (List of stuff to try) Okay, then please send the board back to us for another test."
Brilliant customer service is: "Sorry to hear that it doesn't work on your end, sir. Given that you've had so much bother with this already, would you prefer to just be compensated for the cost of your board?"
If you can't do brilliant, then at least do good. ^
Should add they've always been brilliant to me and I'm very surprised by this.