Had the same issue with a Bush DAB radio, started off when readout started to pixelate then ended up blank, but with back light still lit.
So when reading about the flux being an issue I dismantled the radio and cleaned all soldered connections with a cleaning solvent reassembled plugged it in and hay presto all working name of station and banner running saying what record was being played.
Steve Roseworthy Cornwall, April 2019