my clock was stuck at 1.00. i disconnected the clock by unplugging it from it's 4 pin connector(some have 8 pins)
at its rear and reconnected it after 5 minutes, which corrected the problem. however it is a fault with the later 'traffic master' clocks when the power supply drops below 12volts (esp in cold weather) next time i will remove the fuse instead, which will be a lot easier !!!
G.FINN
June 2011