kenmore 70 series dryre

hi newbee here I have a kenmore 70 series electric dryer the problem that im having deals with starting the dryer if you hold the start botton the dryer will run and work I dried a load by taping the start switch down I then went to sears parts dept and bought a new switch part #3395385 and replaced it but I am having the same problem other than this the dryer works very well dryer is 7yrs old thanks

 

UNPLUG DRYER FIRST
2 usual problems that cause your problem, First is the control board, Look at board on bottom and see if there is a burnt resistor in board if so you need a control board.
2nd problem is the motor relay goes bad. If no burnt resistor on board I replaced relay, Have seen both board and relay bad at same time, Board can also go bad without burning resistor but very unusual. please post model # and can tell if this is your type.

 

thanks for the reply the model # is 110 66722692

 

You have a different dryer than the info I gave before. Not a common problem with yours, Couple of thingd to check, make sure the door switch is working, Is the motor making a humming ni=oise before the drum starts turning?

 

As pugsl asked, is there a hum? Or is there even a loud buzz sound while you push that start button? I'm actually surprised it even goes.

I wonder if maybe there is a drag on the drum,and the centrifugal switch in the motor takes longer to get up to speed, and that is when you can leave go of the switch.

To check that possibility - which is a good idea anyway, as it gives you a chance to inspect the belt, and vacuum inside the dryer (and maybe find change) - you need to disconnect the belt and see if motor shaft spins by hand freely, and if the tensioner pulley (idler pulley) spins freely, and if the drum can be turned with only moderate resistance by hand.

 

no to both replies no humming no noise when the machine runs actually if I tape the start switch down the machine works normally it even stops when the timer expires I am wondering if the new start switch that I bought is defective

 

Got interested enough to open my dryer to look at wiring dirgram and I think ecman is right it looks like the centrifugal switch is the problem. Switch is part of motor ecman has had c=some luck taking apart and repairing them. For me we just change motor.

 

I like this trend of taught but the only way for the machine to stay running is to tape down the start switch during the whole drying cycle if you release it the machine will stop but the drying cycle will end normally when the timer runs out of time with the start switch taped down** thanks for the replys

 

This sounds like something you are going to have to live with.

Or, if you are quite mechanically skilled, and like to take things apart, and see what is up, you could do as I have done. I am one of those types that will try to take switches, timers, engine starters and solenoids, furnace control modules, sealed combustion fans, or whatever, apart, and see what is up(and often fix the problem for free), if they allow you to unclip or unscrew to get them open. Last year I took an ancient furnace conversion burner coupler apart and made my own spring for it.

But if you try anything like this, you run the risk of parts coming out of position. And if that happens, you run the risk you may not figure it out and would have to buy a new motor. So it be up to you if you want to take the risk. If not, just run the machine how you are doing it, until it quits, I guess.