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Intermittent Power / TV Powers Off

  • Others
  • Others
  • Troubleshooting
  • Last Updated 21/11/2012

"The menu should always be accessible if the device is receiving power. Is there a power indicator light illuminated on the front of the TV?"

1. If the customer has not disabled the power indicator light from being illuminated, it will be green or blue if the device is powered on. Press the power button on the front of the TV to check.

2. If the device powers on successfully, press the Menu or Home button to see if the menu appears. Does the menu appear?

If yes: The device is receiving power. Troubleshooting a different symptom may be necessary.

If no: proceed to step 2.

"It is not rare for the power cable to come loose or disconnected. Let's check to ensure it is secure"

Ensure the power cable is connected firmly in the back of the unit as well as the outlet on the wall or power strip.

Note: Some newer models will not have a detachable power cord. Ask the customer to check the back of the TV to determine whether the power cord is secure.

If the power cord is secure, proceed to step 3.


"Let's check to see whether the On/Off/Sleep timer has been set?"

Access the Time/Clock menu see if a timer has been set.

  1. Off Time - If Off Timer has been set, disable to test.
  2. On Time - If the On Time has been set and the TV has been inactive (meaning no buttons were pressed) for 2 hours, it will shut down automatically to save power.
  3. Sleep Timer - If the sleep timer has been set accidentaly it will cause the TV to power off. Disable the sleep timer.

If no timers were set, proceed to step 5.

"Does the TV have enough clearance to receive proper ventilation?"

  1. LG recommends 4 inches of clearance on each side & the back of the TV, if installing in a cabinet. This allows for air circulation and ventilation.
  2. If any of the ventilation openings on the cabinet of the TV are covered, it will not be able to release excess heat.
  3. The TV should not be installed near any heat sources such as fireplaces, radiators, stoves, etc.
  4. The TV should not be installed in an environment where it is exposed to a temperature that reaches more than 104oF, or more than 80% humidity.

"As a last resort, I'd like to reset the unit completely"

If the unit will not turn on with either the remote or the front panel, and all of the previous steps have failed:

  1. unplug the power corf from the wall or outlet for 30 seconds. (It is not necessary to hold the power button during the reset)
  2. Wait 30 seconds while the device resets
  3. Reconnect the power cord and attempt to power the device on using the power button on the front of the device.

Ask the customer to monitor the results of the prior troubleshooting steps to see if the device continues to power off. If so, the device may require service.

2nd Call:

Determine where in the troubleshooting steps we left off. Proceed to complete the troubleshooting to determine whether the device will require service.

Is this the first call for this problem? 

If Yes: Continue with 1st Call Troubleshooting steps.
If No: Proceed to the Second Call Instructions.

Customer Education:

"This can often occur if the power cord is loose or the TV does not receive proper ventilation. Also, if you have just performed a software update the device will reboot automatically."

Lets perform some simple troubleshooting steps to see if this issue can be resolved over the phone.



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