Curcit breaker would trip when oven be turned on - I replaced the feature very soon it stays on but will not warmth? ...

No hot river tonight..worked fine in advance today?
I have the same problem it turned out to be the thermostat, the heat element go first & think this may enjoy been why the thermostat go,worth a try.Good Luck

How do I check to see if the...
I don`t know its the thermostat that's the problem?

or is a fuse gone.. if it's a gas + electric cooker.. you shouldn't really be messing with it unless ya qualified..
Question roughly speaking thrown breaker?
Answers:    Sounds like the T/stat but I'm not nearby so I cant test it for you. I would catch a competent electrician to test & repair it for you & not use the cowboy that you enjoy been using !!