MFD died without warning- next steps?

My MFD head unit worked perfectly until it went dead last week. That is to say, there is no light on the screen, no sound from the JBL speakers, and no reaction to the knobs or buttons. Basically, no more backup camera, radio, DVD, navigation or Bluetooth phone interface. I checked all the fuses (everything under 25 amps) on a test meter and I pulled and re-seated all the plugs in the back. The local dealer and Best Buy both said they were unable to bench-test the unit. Is there anything left to do before deciding on a replacement? Does anyone have a favorite aftermarket unit they want to recommend?

 

OK, @Grit It's nice to see you again. Let me try to restate the question in colloquial terms: What is the next step when the radio don't work and the screen is black? Thanks in advance for all helpful answers.

 

No, it's original. I was just hoping Best Buy or Toyota would be equipped to test it so that I could be sure the car's wiring was not the problem. They are not so equipped.