2004 Toyota Land Cruiser Q&A

2004 Toyota Land Cruiser Question: how can I get my navagation system to start working again?

My sunroof drain holes were cloged so the computer (Nav system) got wet. The nav system works sometimes , but the display is stuck on milage screan,the radio works but it wont display the channel, the buttons that control nav and heat and air will not work. I have a fan on the computer now trying to dry. Any seggestions -
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