Repair radio,ac dash computer display. on 2002 Lexus RX300

The display is blank and the radio doesn"t work, but the AC does.
Checked all the fuses with a tester and they are fine.

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1 answer 2 comments
this issue will need to be diag could be several issues inside dash including grds or bcm
Is this something I can do? If so, how?
i don't rec it, it can be a nightmere and it may cause other issues