Hi,
Almost every electronic product has fuse in power supply section that can blew off if power supply got problem (some parts got shorted) to protect from fire/ smoke.
Some times surge voltages also blow off fuse.
Need to check inside unit for fuse, if found blew off, replace it and if fuse gone again that means power supply is fried and will be replaced. Follow AC power cord to go to power supply board in any unit.
Hope this info will help you.
Thanks.