Issues with reception in Mazda 2 radio
 

Hey guys,

iv'e been facing issues with my Mazda 2 original radio.
Every station i hear is good, but after about 20 seconds it disappears and the radio is moving to search mode.
I have a feeling i pressed something but i don't know what.
Also, on screen i always see ST and AF showed. I wonder if it has anything to do with it.

Can anyone please help?

Thanks!