This is my first dryer and soon as 3 year warranty goes out it start to act up. I did cut off/on both the breakers to see if it help, but apparently not other than that everything works. I never look inside the dryer before so I have no idea what the thermostat nor a fuse look like and where they're located. Please help me get this fix soon as possible, because I do not want my wife to buy another one. The model no. is 110.666.42500 thank you.

It could be a few different problems, I'd start by taking the back off the dryer and inspect the element to make sure you don't have a broken or burnt element.