My 2011 CT200 all of a sudden has no sound out of the radio…no sound with Bluetooth connection of phone or radio. And, no sound from AM/FM not just streaming. I checked the 7.5 amp fuse in fusebox but looks fine and when pulled, the NAV/Radio screen wouldn't pop up upon starting the car. I get info on display and it shows the call in progress on screen when I make a call…just no audio. Need help on this one. Anyone have any ideas where to start? Is there a fuse somewhere on the factory amplifier for stereo I could check? Any help appreciated. I called the dealer yesterday to ask how much to diagnose. They want $140 to look at it and tell me that it will be applied if a repair is necessary. Worst case, a new radio, dealer tells me part is about anywhere from $1,400 to $2,200 (not including installation). I think at that point, my car is 4 years old, I will sell my car rather than spend a couple thousand on a factory Lexus radio.