LG DLG2102w gas dryer. No power to display. Light works. Tested door switch and is okay.

i have a dlg2102w dryer that will not start now i hve checked everthing when i hold the power button the start button lihts up also the the the lights around the center dial now when holding the power button i push the start button the unit starts and the burner comes on now still holding the buttons i let go of one and it don,t matter which one i let let go and it stops running