Priključek za slušalke - headphone connection Core box i5

[Comp]

Ne dela.
Doesn’t work.
Ni glasu.
There is not sound.
Poizkusil sem z zvočniki in slušalkami.
I tried wit headphone and speaker.
Ni,nothing, nada, niente, complet zero.
Kaj mi je storiti.
What I have to do ?