The FM signal remained off air on Tuesday. Listeners can still tune in to CBC Radio One at 990 AM. or via digital stream on the CBC Listen app or at cbc.ca/manitoba. Both the FM and AM radios went out Monday morning around 8:25 a.m. after the backup battery failed. The show at 990 AM. was restored on Monday. Richardson Building officials estimate that power will not be restored until sometime Friday. We apologize for any inconvenience. More from CBC Manitoba: