PORTLAND — The lights are still out on the roof of the Time and Temperature Building.

The property manager for the property at 477 Congress St. hoped that the digital sign would be blinking again today. The sign went dark Friday afternoon when a circuit board failed. Installation of the replacement that arrived today didn’t resolve the problem, according to CBRE/Boulos Property Management.

Engineers will be at the city landmark to work on the clock Wednesday. In the meantime, the time and temperature for Portland can still be heard by calling 775-4321.