Clean the remaining corrosion from the battery cables and confirm the connections are tight. A fuse is unlikely because the power returns by itself. Have an intermittent electrical short checked, especially around the radio and control panel where clicking and repeated on-off cycling were noted.
The owner of a Pontiac Aztec reported that power, the interior lights, and the radio briefly cut out while driving and then returned without a restart. The radio and control panel later switched on and off repeatedly, with a clicking noise behind the radio. The battery connections were tight, but some corrosion remained from an earlier battery leak, and a parts-store test found no charging problem. The expert recommended checking the battery cables, said a blown fuse would not reset itself, and suspected an intermittent electrical short.
