I installed three new parts, each of which could have been responsible for the problem. Once installed the dryer resumed working properly. The videos were very helpful. But I would suggest the video on the installation of the gas valve coils make it a point to note that the each coil does not get inserted onto its post in the same orientation. The 3-prong coil is inserted such that the prongs are at the bottom, but the 2-prong coil is inserted such that that prongs are on the top. If you are paying very close attention to the video you will see this but it is not pointed out by the instructor. The entire transaction and repair process was exceptional overall. Thanks!