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jim5775  
#1 Posted : Thursday, February 7, 2013 1:31:10 PM(UTC)
jim5775

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Joined: 2/7/2013(UTC)
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I have a dryer that will not turn on at all. It was working fine and now nothing. I am thinking either door switch or thermal fuse. I am going to order parts from appliance pro, should I add anything else so I am not placing several orders?

Thank you for your help
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denman  
#2 Posted : Friday, February 8, 2013 2:45:04 AM(UTC)
denman

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Here are your parts includes a wiring diagram.
Parts for Admiral LNC7764A71 Dryer - AppliancePartsPros.com

I would find out what part is bad before ordering anything.

If you do not own a meter, I would suggest you purchase a one. You can get a decent digital multimeter for under $20.00. You do not need fancy though it is nice if the leads are a couple feet long.
If it saves ordering one unnecessary part it has paid for itself and you end up owning a useful tool.
Most places will not let you return electrical parts so if you order it, you own it.
A couple things to watch when measuring ohms and continuity
1. Always remove power from the machine otherwise you could blow your meter.
2. Always disconnect at least one side of any device you are checking. This eliminates the possibility of measuring an alternate/parallel circuit path.
3. When checking for closed contacts and continuity use the lowest scale (Usually 200 ohms). Then try higher scales. This scale is 0 to 200 ohms so if the device you are measuring is 300 ohms this scale would show an open circuit which it is not, you are just measuring outside the scale's dynamic range.
4. When you start always short the meter leads together. This will tell you that the meter is working and if there is any 0 offset.

There is a good STICKY at the start of this forum about it's use.

Could be that it is a power problem and not a machine problem so I would start there.
Try flipping the breaker off/on slowly a couple times. Sometimes you can loose half the line without actually tripping the breaker.
Check the voltage at the plug
L1 to L2 should be 240 volts
L1 to Neutral and L2 to Neutral, both should be 120 volts.
L1 is the motor drive voltage
If OK
Unplug the unit and check the wires at the terminal strip in the machine to make sure none are loose or burned out
If OK
Check the power at the terminal strip.
Do this with the heater off and on.
[COLOR="Red"]Be careful as 240 volts is lethal !!![/COLOR]

To check the thermal fuse
Unplug the unit and check the fuse with a meter should be 0 ohms.
This is the safest method.

Jiggery Pokery method is.
Unplug the unit.
Remove both wires from the fuse, short them together and tape them up so they will not short to the frame.
Plug the unit in and give it a try.

If blown, replace the fuse ASAP as it is a critical safety device re: prevents lint fires which can turn into house fires.

Also clean/check your vent system and the blower as these are the most common causes of it blowing.
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