Technical someone put 5 disc cd player in but wont work

[monkeyt1t]

I have a old radio in and someone has installed a 5 disc cd player in but it does not work or find it if i look for it does anyone have any ideas??

 

[custard]

sorry but you need to give way more information for any realistic replies

 

[fingers99]

Maybe best posted in the ICE section.

But, yeah, lots more info needed.