My lg dryer only stops running when you open the door completely

The load is dry, yet the dryer keeps running and running. Before that unnecessary heat damages your clothing and drives up your utility bill, you may need to replace the timer or the electronic control board that isn't ending the cycle. If your dryer uses a mechanical timer and doesn't stop when the dial reaches the off position, then a failed contact in the timer is likely causing the dryer to continue running and you'll need to replace the timer. If your dryer uses an electronic control, a stuck motor relay on the electronic control board can cause the dryer to run constantly with the dryer door closed. If the dryer stops only when you open the door, you'll likely need to replace the electronic control board.
If the dryer won't turn off when you open the dryer door, the dryer door switch likely failed. Replace the door switch if it doesn't accurately detect the door being open or closed.
These tips can help you figure out what's wrong when your Kenmore or Kenmore Elite dryer spins when off. You can also use this repair help to fix your Whirlpool, Frigidaire, Samsung or LG dryer that runs when the control is in the off position.

I would guess power button is stuck on. It can be replaced.

My b issue is the door trigger. Before you go to crazy, keep the door open and press the ltrigger latch for the door. If you're lucky it will stop the cycle.

An IC controller is deffective or can be converted into manual since it stop when you open the door, but only the technician can do this.

The door switch may be short or close for ever. Check the door switch first before thinking of malfunction control board.

Hay Donald , sounds like the relay on your control board is stuck closed .replace control board, good luck APPLIANCES R EN

If that vibration is while running it may be from an imbalance of the clothes in the drum. Open the door, when the drum stops reorder the clothes around the drum and see if the rumbling stops.

see the next steps and proceed with common sense: God bless you
If the lid switch is defective, your washer can't spin and may not function at all. The switch is inside the washing machine main housing near the door frame. Often you have to raise or open the top or front of the washer to get to the switch. If it's defective, you need to replace it. To determine if the lid switch has failed, watch the part testing video at the bottom of this page. Some machines have a special lid-switch fuse near the lid switch, inside the control panel. If this fuse blows, the unit won't fill with water until you replace the fuse

The image below shows the wiring diagram for your model of dryer. The door switch is shown in the closed position. When the door is opened, the contact is broken that completes the neutral circuit through the door switch. (I am not showing that your model of dryer has a drum light. If it did, then the drum light would illuminate when the door is opened.)

Based on your symptom, a bad door switch is apparently causing this problem. It is not breaking the neutral circuit to stop the motor from running. Replacing the door switch assembly should fix this problem. NOTE: Be sure to unplug the dryer before accessing any internal components.

its mean the timer is need to replace due to shorted of the timer,it easy to replace the timer if you have idea how to remove the front cover,but make sure to check the part you remove and carefully to return.but the easy way is call the service technician for your safe and easy to you.and get a warranty for the replace parts.