[FM Radio Sound Problem] Rover 75 Alpine Hi-Line

[Mats]

Hi guys,

my father's 1999 Connoisseur Hi-Line radio does not work anymore and I seek your expetise.

Here are the symptoms:

1.1) FM scan runs fine and stations are found
1.2) FM sound is absolute minimal and only hearable if the engine is off, the volume on level 11 and one's ear right at the speaker

2.1) AM scan does not find any stations
2.2) AM sound works fine

3) No water ingress in the boot.

4) Aerial connector in the boot checked: connected and no rust

5) CD works without a problem


Every input is highly appreciated. Thank you very much in advance!


Cheers

Mats