Q1: Do you have a dash antenna switch? Q2: Is the radio/HU working OK?
There should only be 1 fuse for the antenna, in the fusebox. Check the ground connection at the antenna too. If you can easily get at it, I'd also check power coming from the harness at the antenna plug too. If you can confirm that its getting power, then you'll need to remove the unit and do a bench check. Real easy BTW, and most problems are related to an accumulation of grime that prevents the mast from rising. That's easy to fix too, of course.

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1986 560SL
2002 Toyota Camry
1993 Lexus