Kia Troubleshooting Questions? Ask a Mechanic
Hello, I'm Brandon- Kia tech
Most likely the stero unit is burnt out. the whole unit will need to be replaced. This is a common issue with the Kia soul.
Before you changed please check the radio fuse in the fuse box.
If the fuse is OK. Then it is the whole unit is bad.
Please rate me positive for the prompt service, thank you.