Well, it does NOT complain about anything (unlike R9800Pro running without the external power cable, taht correctly display the message on monitor...) - it just did not run at all

VGA bios never initialize, so the machine never post.
Silencer is great, I actually have one on backup 6800 LE card:
http://trodas.wz.cz/index.php?act=ST&f=14&t=239
...but unfortunately this is NOT what I wanted...

And certainly not what I payed good deal of money for the DD NV-68 block.
But one nice guy at Extreme forums come already with solution - make the fan spin, measure the lowest resistance and then replace the can with a resistor of the same resistance you measured
1k Ohm resistor, rated for 0,5W (originated in Russia, BTW) is sitting into the cardie fan power socket - I took the connector and very small part of the cable fom my old, dead eVGA 5700U card and covered it with the soldering points into PVC isulating spaghetti
So I should be safe.
Now using Russian parts to make American card works, uhm, errr, well...