Fuji F10 Problem

[gazozborne]

I bought this camera around August last year mainly for when i went on holiday, however i noticed that when i took a few videos at least a quarter of them had no sound, well, the sound it did have was a "staticy" sound. I've recently been using it again lately and now every single video has no sound whatsoever bar the static. Just wondering if anyone had any suggestions before i sent it back to Fuji?

I've tried cleaning it out but im at a loss as to what it could be

Thanks