If you have fuses, it is possible one leg of the 240 Volts is blown, Leaving only 120 Volts to the range.
For breakers, you should have a 2 pole breaker feeding the range, meaning both legs should have tripped. But, I have seen installations where the electrician used 2 - 1 pole breakers instead. If this is the case, you may have one of the breakers tripped. Also, you should change the breaker to 2 poles.