Does it have a removable control head? If so, be sure that it is correctly seated and snapped into place. Also be sure that all plugs are securely seated like power, clock, speaker and antenna plugs. Good luck
Double check the fuses to the unit then double check the ones specifically for the radio as well as the ones under the hood then re check ALL connections to and from the radio..
You need to review the audio setting! Check the cables behind device, (audio one) then make sure it is connected with proper one on the plastic connector! Good luck
While the machine is on, put the old toner back into the machine, close the front cover. Open the front cover and replace it with the new toner. Make sure new toner is shake well.