Head Unit Problem

[Vdragon]

Hey guys iam having trouble with my head unit. I installed it my self couple of months back n it was working fine till one day i turned the volume up n the sound cut out. I took the head unit out n then plugged everything back again it worked but then later that day as i was driving it cuts out again n i get no sound. Any ideas on wat it cud be?

[DC33VN]

its most likely your grouding point is not strong enough or a loose connection