The part most vulnerable to a surge of power capable of blowing a fuse in our rangemaster is the thermostat switch which fits like a collar around the spindle of the main cooker control knob. You can't get at it without removing the front panel. However there are other vulnerable parts such as the Flame Supervision Device which regulates the amount of gas that reaches the oven. If no gas at all gets to the oven not even for the pilot light, then it's likely to be the FSD (£60 app). If the pilot light ignites but the oven flame doesn't respond to turning the control knob up, then it's likely to be the thermostat switch (£10 app). The bad news is you need an engineer to do either job at extra £££s if you haven't done this already. Our classic 90 "eats" these parts regularly as those brilliant guys at "Gas On Spares" will testify.
RJC, August 2010
