Problem image block on vusolo2

[acab]

Hi to all, on my vusolo2 in my possession from two months,it happens very often,at least once a day, which hangs on any channel,with still picture and audio,and no longer responds to the remote control and manual controls.Then I have to restart it.On the hard drive there is no crashlog,and so I do not understand what can depend on.Has anyone had similar problems?from what can be? Thank you