yet another Rokit5 with bizarreo noise: see/hear video to take a stab

[rgouette]

This noise happens with or without a sound source inout, so we're talking
an internal issue...
I opened it up last night, and did not see anything amiss on the board: no bulging caps, etc

Just wondering if anyone knows for sure a good suspect, for an intermittent issue such as this.

Thanks lads,
Rich