RC390 Dash Failure

Looking for some advice.One of my endurance racing team mates over rev'd the RC390 and it blew the head gasket. The shop that was doing the head gasket repair left the chassis outside in a heavy rain storm. When we went to race it next time the not all of the dash functions would show up. The next time out the tach, and trans gear would not register. Half way thru the 3 hr race the only thing still showing in the dash was the shift light and neutral light. I figure it is a dead dash. However, I am wondering if the dying dash could be from anything other than getting wet. thoughts???
 
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