Dash screen went black. No radio etc.

If related fuses are OK, then hands on diagnostic testing utilizing the workshop manual and suitable diagnostic tools are needed to figure out what else may be happening. A diagnostic tool capable of working with Body related modules can be used to look into this further. It's possible it could be an internal audio unit concern that will require removal and repair or replacement. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops