Sounds like maybe a thermostat issue, like its not sensing the correct temp and shuts off too soon. Or maybe a faulty heating element?
And if you don't have anything in it now, you might look for fuses up in the top. Mine is occupied, so I can't look, and I'm just thinking out loud, but it might be something you can easily fix. I've also seen pretty cheap replacement parts if you are handy enough to try to fix it.
Best of luck!
And if you don't have anything in it now, you might look for fuses up in the top. Mine is occupied, so I can't look, and I'm just thinking out loud, but it might be something you can easily fix. I've also seen pretty cheap replacement parts if you are handy enough to try to fix it.
Best of luck!