A couple of years ago, I did something similar; it was my washer though, not the dryer.
Funny thing is, I had been sold on the extra protection plan / extended warranty for the washer and dryer back when I bought them (oops... but as you'll see below, I guess it paid off). I reported the problem and the plan had someone come out and make an estimate for what it would cost them to fix it. I guess the estimate came back too high and they thought it made more sense to buy a new machine instead of repairing my old one.
Here's where it gets good... I used the YouTubes and some other web resources to figure out how to diagnose and fix the problem. I ordered a $55 part and fixed it myself in about an hour. Meanwhile, the warranty company sent me a $576 check to buy out my extra protection plan.