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Parts for Whirlpool LTE5243DQ0 Washer Dryer Combo - AppliancePartsPros.comBelow is a link to a manual.
It should be close to your unit.
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http://appliancejunk.com...e&id=30;t=1407752724[COLOR="Blue"]1. Given the problem, is it likely this is the culprit?[/COLOR]
I cannot say.
It could be that the motor timer contacts are badly pitted and dropping voltage so that there is not enough power to run the motor.
You will have to do a live voltage check for this.
Light Blue to WB (not sure of the wire color) at the timer should be 120 volts with the door closed.
It should stay close to this value when the start button is pressed.
A safer but less reliable test would be to set the timer to where it should work.
Unplug the unit and then check the timer contact sets with a meter.
Use the most sensitive resistance scale and short the meter leads together before starting so you can see if there is a zero offset in the meter.
They should be very close to 0 ohms.
[COLOR="Blue"]2. Given the picture, do I have to replace the entire unit or is there a way to swap out just the bad pieces?[/COLOR]
No the timer has to be replaced as a unit.
[COLOR="Blue"]3. Is there a way to test where on the unit the problem is?[/COLOR]
See above.
Another test would be to open the door and manually close the door switch.
Now push the start button and turn the drum in the correct direction.
Be careful you do not crack your knuckles etc. if the drum/motor starts.
If it starts up then odds are that it is a motor problem.
This may take two people to do.
Also do not let it run very long with the door open as you can blow a thermal fuse.
When doing a live test be very, very careful there is 240 volts at the timer and that is lethal.