Lamps interfering with DAB radio
As you know, we have to pass various IEC standards and conduct both radiated and conducted EMC tests to test for possible interference with other electrical devices. Every Megaman product we manufacture is EMC tested.
This is certainly not a wide spread problem however in some very rare cases the high frequency can cause interference with DAB radio's and vice versa.
Out of interest, as a quick exercise have they moved the radio to a different position in the room to see if there is any improvement? If not can they try this and advise.