Sunderland says she hopes to resume her sail on her 40-foot craft, Wild Eyes, soon.
The power problems bring an end to her hope of making no land stops during the trip.
She can still break the record of 17-year-old Mike Perham of Britain, who stopped on land during his voyage.
Sunderland set sail Jan. 23 from Marina Del Rey and plans to be at sea five to six months.
