Is the fan shot on my NEFF B1421 oven?

Hello there,

A month or so ago I replaced a broken heater element in my NEFF B1421 circotherm oven and it works dandy.

Now the oven seems to take quite some time to heat up and takes an age to cook something. Seeing the oven is nearly 10 years old, I suspect the fan is well past it's sell by date.

Could you confirm my suspicions and what steps I should take to get the oven cooking to it's former glory.

Thanks