Disco 1 Amr5117 location

Hi folks, stereo no longer receiving radio. Been told to look at radio amplifier ecu. Anyone got any thoughts. 300tdi es 1996 model. Checked cables in back, all ok.

What cables in the back will that be?
The amp is above the headlining and above the antenna in the rear off side glass, but no good in just looking at it, ok if you have the skills in testing amps other wise its testing by replacement, which also goes for the head unit which may have a fault. I suppose you could have the head unit out to test the coax wiring continuity from the head unit and the supply to the amp is ok.

Checked stereo, out and plugged in another car, so thats ok, also checked the cables at back of the headunit, all ok. I was told the antenna ecu has a fuse? Thats why im looking for a location

here you go, Z176