Repair Nutone IM3003 master unit

I have a Nutone IM3003 and it powers on and off but the FM frequency doesn't work so we can't get any radio channels. The AM seems to scroll through frequencies but doesn't pick up anything. Is there anything I can do to repair this unit? I'm just moving into this home and don't have any history on it but it was working before a thunderstorm came through.

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