How can i mend the grill and oven on my electric cooker?

I am not familiar with your model of cooker but I assume it is a gas cooker.

Gas cookers have safety devices in the oven and grill the hob rings do not need. I speculate even the domestic oven hasn't escaped the interference from the electronics industry and I expect the aforementioned safety devices depend on (low voltage) electronics and electronics depend on electricity - that the lights aren't working would suggest there is no (low voltage) electricity.

Even in the case of an electric oven the thermostat could be electronic and need (low voltage) electricity to work.

I suspect the internal power supply has failed.

Flavel : Manuals

www.flavelappliances.com/Products/Manuals
If you've lost or misplaced an instruction manual to one of your Flavel products, don't ... Electric Fan Oven with Separate Grill ... 60cm Side Control Gas Hob.

NO NEVER EVER DISCONNECT FANS OR ANYTHING ELSE ON YOUR COOKER.
Your cooker may have at least two fans, one for heating the oven cavity and one for cooling the electrics etc inside the oven. If the fan is noisy, check to see the fan has not come loose on the motor (maybe left had thread) if the fan is ok, then the fan motor may need replacing!

i have a vey old tricity contesssa cooker(which i love!)
The rings are heating but the oven and grill have stopped working,any suggestions on how to fix please??

This tutorial will show you how to check your Smeg element and how to replace your Smeg cooker element.
Here are the 3 main faults to look for in your oven or cooker that is not heating

1. Your oven will not work until the clock/timer has been re-set after replacing an oven element or tripping the electrical supply. Consult your Smeg manual.
2. If your Oven is not getting hot or heating up it could be a faulty element, if the fan in the oven is running and the thermostat light is on, this will lead us to believe that the element has gone faulty. With grills the thermostat light should come on there should be heat, if not then this could be the grill element or the thermostat.
3. When you turn the oven on, the household electrical supply trips on the Rcd (this is the earth trip in the fuse board sometimes called the breaker tripping) your fan oven element has gone to earth and needs replacing.

If this helped you why not get me a beer? Paul is from the Naturally he would appreciate beer How to Repair Home...

The hob is normally totally independent of the oven. What is actually working or not working on the oven? i.e. does the grill still work, is the clock OK and can you set it, or is everything totally dead?

If the elements 'look' okay, they probably are. The 'infinite control switch' is probably the problem. With out the use of a meter, it's guess work. Unless you can see a connection problem.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

if the elements work but the fans dont are you talking about circotherm main oven fan or cooling fans ? there are 2 if its a double oven ,the age of your oven suggests they are gummed up with carbon after years of use and will have seized up.

hope this helps

Hi.
Try looking inside the oven, or at the bottom front

it is done from the rear and inside cavity.Can be supplied approx £24.00+p&p,Check old element for continuity.