I have a rangemaster 90 cooker. 5 years old. The large fan oven will not come on and the clock/timer display is not working. Everything else is working. From reading previous threads on the 110 rangemaster the timer needs replacing or at least bypassing for the large oven to work. Is the method of getting into the timer/clock section the same. need to get oven up and working at least for Christmas. HELP,

PAT, December 2014