We have a kenmore 900 series gas dryer.(model # 77902791). The dryer starts running for approximately 8 seconds and then shuts off. I have taken the dryer apart, vacumned the entire inside out. The motor was coverd with lint. The dryer ran for 1 load of clothes and then would not start. When you push the start button, the dryer just hums. Iin the off postion;when you push the start button it buzz's.
What is the next step of the process to determine what is wrong with the dryer.
Thanks in advance.