Rangemaster platinum grill and oven issues

[Simon Parker]

Hi there
I have a rangemaster platinum.
A few months ago when turning the grill on, the oven on lights for both of them would come on however the grill wouldn't work

Then it started working.

Now, when the grill is put on ( one side or both) you see the grill light flick on for a split second but then it puts both of the oven lights on, and doesn't work.

When the main oven is put on the temp light for both ovens is illuminated and works as it should,
When the secondary oven on the right is out on the same happens the temp lights come on for both ovens and the oven works as it should.

If you use both ovens the temp lights do not come on and both ovens work as they should.

I assume I have a switch issue? Can't see the grill elements being faulty?

Anyone had this issue?

Thanks in advance

Simon