My dryer is almost 4 years old. It's been acting kinda funny lately. First, the light sometimes flickers on/off. I thought I just needed to replace the bulb (it would turn on if I tapped on the cover a bit). Then, it sometimes continues to run when I'm using the automatic dry settings -- it won't stop unless I open the door.

Finally, yesterday we started it on timed setting and it started, but then stopped. Now, I'm getting NOTHING when I hit the start button.

What should I check first? Thermal fuse? Can I tell if it's bad by sight and replace it (along with thermostat)? I'm sure the vent needs to be cleaned out too.

Thanks for any advice!!