Dryer wont turn on, bulb stays lit when door closed

Dryer won’t turn on. Bulb was burned out, replace, and still stays on with door closed, is this likely a bad door switch, or could it be bad timer?:confused:

DUPLICATE

Please see the following
http://forum.appliancepartspros.com/dryer-repair/491410-dryer-wont-turn-also-light-stays-door-closed.html