White Westinghouse Dryer

I changed the timer in the dryer and it will not start with the button. I hear the timer working and checked all the circuits and they are getting power. I’m at a lost???

What was the original problem?

Here are the breakdown diagrams and Replacement parts for FRIGIDAIRE MDE336REW0 Kel(v12) / Electric Dryer | AppliancePartsPros.com

Gene.