Fiesta - audio problem

[Newbie1]

Hi all,

I have a 2008 fiesta (the newer shape) and my radio display turns off, then about 20 seconds later the actual radio itself turns off. So I turn the radio back on and soon it does the same thing all over again.

The problem seems to not be with the radio-component itself, as I bought a second-hand one and I installed it - yet the problem remains.

Has anyone had this problem before, or know how to fix it?

Cheers.