MFD and audio clock lost power

Hi all,
I have read a few threads where people have problems with mfd but none include cd or clock.
IT was all working fine , never been a problem.
I was out of car for 20 mins when I restarted it there was no radio or mfd.
I have checked all fuses and they are all good. It has been tested with voltmeter and there is only 0.5 volts going thru fuse.
Please does anyone have any ideas??
regards to all