Corsa VDO CDR 2005- no power

[Harney]

I pressed the button to search for a channel and now there is no power.

Is it perhaps a fuse or more serious?

I've phoned a couple of car audio specialists and they haven't phoned back, I think they are more interested in installing new audio systems. Vauxhall will look at it but I suspect they will just want to install a new system (mortgage required?).

Where do I start: auto electrician, Vauxhall or can I check it myself. Where can I get the tool to get the radio out?

I do have the code.

Help, please.