CD + DAB radio (Caldy Valley CH3)

Elderly CD player with DAB/FM radio. NB it’s DAB not DAB+. The CD works ok and the speakers sound good but there are problems with volume control and crackle on the radio - it works fairly well with the remote but not using the controls on the box itself. It’s become impossible to set presets on the radio, but there are still a couple of presets programmed awhile back. The manual is included.