UK-POLOS.NET - THE VW Polo Forum

Hi i have recently been having some head unit problems. I just blew a fuse so changed that and everything was working fine for a few hours then when i was driving my head unit turned off. The head unit turns on when the ignition is turned the first notch but the head unit turns off when the engine is turned on. I have pushed all the wires in further to check that its not a loose wire and nothing seems to change. I have also checked the fuses but all are fine. The head unit turns on sometimes when i am driving but sometimes turns off again and do not know what is wrong? any help would be good.
thanks

can i ask what make/model the hu is?
my bro-in-law had simliar problems with his old alpine md hu, but not sure if he got it sorted... ill try find out