Over the winter of 2016 -17 the Timeball Tower Museum underwent considerable refurbishment. The electrical systems were updated and the interior was repainted. The Timeball roof was completely re-sealed and all the slates were replaced. Regrettably at the start of the main 2017 season, a fault developed with the Timeball operating system which necessitated adjusting the movement of the Ball to make it slightly slower. Eventually an expensive major overhaul will be needed to the switching system which controls the Ball's travel. There were periods in 2017 when the Timeball was locked for safety reasons; this may unfortunately continue into the 2018 season until the major overhaul can be completed.