2008 Mustang - no power to radio checked fuse in panel and it's ok. What else can I check?

'Reset' as in disconnect the battery for a couple of hours? No that will cause a whole heap of other issues. This explains

https://www.fixya.com/cars/r29912554-changing_battery_not_create_problems

Check all the fuses for radio and windows first.

2006 Ford Mustang fuse box diagram

StartMyCar https://www.startmycar.com > Mustang > Fuse box

Type No. Description Fuse FMX/JCase 1 Not used Fuse FMX/JCase. 30A 2 Climate control blower Fuse FMX/JCase. 40A 3 Cooling fan View 58 more rows

Ford Mustang (2005-2009) fuses and relays

Fuse-Box.info https://fuse-box.info > ford > ford-mustang-2005-200...

Here you will find fuse box diagrams of Ford Mustang 2005, 2006, 2007, 2008 and 2009, get information about the location of the fuse panels inside the car, ...

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have you checked the fuse at the back of the radio ? If ok and has power to the radio then check the earth is ok, and the ignition on power is ok , if all these are ok then the fault lies within the radio

there is a fuse in the back of the radio ,have you checked that one , if ok check that the radio is actually recieving power as may have a wiring connector fault

Start by checking the fuse panel for a blown fuse.

Check all the fuse links under the hood. Get a manual for your car at an auto parts store for the locations of them.

You are loosing power to the keep alive memory circuit of the radio. I think you may have a defective ignition starter switch. Also there are two hot wires to the radio, one powers the radio, one holds memory and is called the Keep Alive Memory constant power wire. Here is the wiring colors, pull the radio and check the memory power supply wire.
Radio Constant (keep alive memory) 12V+ Wire: Light Green/Purple wire

Did you check the fuses under the hood. I had that problem with my 2008 Mustang today. Removed and reseated fuse 56-solved the problem.

Disconnect your car battery for 30 minutes. Plug it back in.

Hello, Besides the fuse in the car fuse box, behind the radio you should have another fuse that goes into the power line of the radio "most radio's do" . Tho some don't. That may be what has blown that is keeping it from turning on. I would suggest removing the unit from your dash and check the fuse behind there. Hope that helps ya.

Why would you purchase an extended warrantee. Forget any warrantee,on any product. Have you even read, what your copy says?
Your vehicle should be covered for at least 3 years and 45 to 50 thousand miles.
What did the dealer say was covered? They know more about your vehicle, than any one trying to help you.