[amsat-bb] FT-847 Field day help needed

I have used my 847 with cat control without problem. So far today, the 847 will not transmit in sat mode but works fine when not in sat mode. Anyone have any quick suggestion? I am hearing all satelite great but, in satellite mode, The TX indicator comes on but no actual power. I would like to make my 1 contact before Field day is over. Thank,

Doug K9DLP