Hello all, just a quick question regarding the above PSU, which l purchased with my Sensation M901 Russian PIO Cap upgrade) and it is quiet as a mouse, however when the same PSU is plugged into my Sensation M451 ( ClarityCap upgrade), it hums to high heaven, so much so that it is heard through the loudspeakers, any ideas as to why this is happening and are there any quick fixes for this, any help welcome and have a nice day.