Just bought new timer, replaced with old timer, still not starting. What can be the problem.
If the unit is not starting at all you will first want to check the door switch WE4M415. When testing you will check for continuity with the door closed. If there is no continuity then the door switch is bad and needs to be replaced. If the door switch checks ok then you will need to check the thermal fuse WE4M137 on the blower housing. If the thermal fuse does not have continuity then it needs to be replaced. If the thermal fuse checks ok then you want to check the interlock switch WD21X10261. This is down by the motor and would have continuity with the button pushed in. If no continuity then it would also need to be replaced. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html
How do you check to see if timer is bad/good?
Answer Hello John. Test for power to the timer motor wires. If there is power there and the timer does not turn, you will need to replace the timer WE4M357. If the motor is turning, you will test for the timer sending power to the parts on the unit. If it does not send power to the thermostats, you will need to replace the timer. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html