After testing the card in my A4000 it worked.I also heard the clicking sound of the relays, never heard that before.
I then reinstalled the card in my A3000 and it worked for the first time. Sounds strange considering that I tried practically everything else to get the card to work, the only explanation seems to be is that the caps near the relays were still charged after the card was powered up in my A4000.
Is there any good online reference material for troubleshooting & repairing an A3000 PSU ?
Cheers.