My LG DLE2514 dryer will not spin. So if I start a load, I hear the engine hum but the drum does not spin. If I open the front door and press the sensor down, which fools the machine that the door is open, then proceed to turn the drum manually; the drum begins to spin. The spin of the drum at this point can take a laundry load. What can it be?

Try this, open the dryer door and hold down the door light switch. Turn on the dryer and press start.When you hear the motor humming, turn the drum clockwise with your hand to see if it will turn. If itruns, you have a bad motor and will need to be replaced. If it doesn't turn, something is jammedinside and you will need to disassemble the unit to find the jam.
Hope this helps.

check the blower wheel sometimes objects get caught in it not allowing it to spin. If it is clean open the dryer door push and hold the door switch and push start while it is humming rotate the drum. if it starts to spin then you need a new motor it will run you probably 150 - 200 dollars

Check to see if the drum will turn by hand. If so, leave the door open but push the light switch button down and start the unit. Once you hear the humming sound, manually turn the drum with your hand to start. If the drum turns normally, you have a bad motor and needs to be replaced. If the drum does not turn, something is jamming the motor and needs to be disassembled and inspected.
Good luck

You have a problem with the dryer motor and it needs to be replaced.
Good luck.

Interesting question.

Humming may be from the motor or incidental belt noise. There is a felt bearing on the drum where it rides on the front panel and this felt bearing can get dirty. I'm not convinced it would make a humming sound.

Tell me, what tune is it humming?

Kidding, sorry.

If you want to open your machine, generally speaking, dryer tops are held down with spring clips. To remove, pop the top by prying it up. Be careful you don't damage the finish. Front panels are generally held in place with spring clips and/or screws or tabs. Take appropriate action and remove the front. Be cautions of the door switch wires. The drum will come free and fall to the floor. Do what ever maintenance you feel needs to be done and reassemble. You may want to replace the belt while you are inside. I recommend you take pictures before you take the drum out of the cabinet paying particular attention to how the belt is driven through the tensioner on the floor and around the motor pulley. A cell phone with camera is particularly useful for this purpose.

Find replacement belts at a FixYa.com advertiser, local applliance parts place, LG website or www.repairclinic.com

I hope this helps you

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It could be the capacitor which kick starts the motor.

they are relatively cheap to replace.

Ash

that is the safety switch probably need to be replaced. or make sure the door is closing all the way.

If you open the door can you turn the inner drum by hand , if you can is any there any resistance or does it just spin freely

It sounds as if your drive belt has snapped and what you hear is the motor running on its own

If the drum spins freely you will need to take the back off the machine and see what state the drive belt is in

Ps

Is there heat inside the drum when you try to make it work without a load.

Sounds like the starter winding is out.

Remove the 3 screws holding the top of the dryer.  Push the top towards the rear and remove top.
Remove the front control display board by removing the 2 screws and unsnapping the control panel.
Remove the 4 top screws hold the front panel and the 2 bottom screws in the door frame area.  Remove the light switch wire connector.  Tilt the front panel forward and lift up.