i've had this before in a v3 and was told by somebody that it would be that i hadn't c;leaned the flux off properly so i wen't back and wenn't over it again with some isopropyl alcohol which seemed to cure it.
from then on i've been really carefull about cleaning flux away etc, just installed a h20 in a v9 and i'm getting exactly the sam,e thing even though its cleaned thoroughly???
any ideas what this could be, is it anything to do with the chip??