UBook Pro N4100 no sound but click sound

From the unboxing on till today my Ubook Pro produces click sounds, but otherwise no sound at all except when using headphones with plug.
Removed driver, reinstalled, removed speakers in system manager, rebooted and so on and so on. Still no sound but click sounds which move from left to right and back…
Anyone any ideas?

Having the same problem after 2 mths with 8100Y model. Click sounds from speakers only no audio. 3.5mm jack and blue-tooth audio works fine.

light “flexing” and/or tapping at rear panel sometimes make the speakers work for awhile, suspect hardware problem (eg. loose connection)