Here are your parts
Replacement parts for Maytag AED4475TQ0 29" ELECTRIC DRYER | AppliancePartsPros.comSee the attachment for the tech sheet.
You said that you had tested certain parts but did not say how so:
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.
First check the power.
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.
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]
If the power is OK
Unplug the unit and attach (tape) one meter lead to L1 at the power cord and leave it there.
Set the unit to timed dry mid scale.
Set the meter to a low ohms scale,usually 200 ohms.
Now work your way back through the units start circuit.
So Fist measurement should be the timer connector BK = 0 ohms.
Then
Timer connector BU = 0 ohms
Thermal fuse both sides = 0 ohms
4M on the motor = 0 ohms
W or W-R on the push to start = approximately 1.5 ohms
Activate the push to start when doing the following.
BK on the push to start = 1.5 ohms approx.
Door switch NO connector = 1.5 ohms
Door closed
Door switch NC connector = 1.5 ohms approx.
N on the power cord = 1.5 ohms.
