Question about LG 37 inch 5ms HDMI/HDCP Wide-Screen LCD Monitor Black Refurbi

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LG 37inch flat screen TV turns off after a short while being on

After turing on the tv it shuts off after a few minutes then it will not come back on and you have to unplug the tv to turh off the power

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  • LG Master
  • 14,553 Answers

The real clue is you have to unplug it- That means to me the microprocessor in the set is locking up or confused because of whatever is wrong with the set.

I suggest removing the set, Any cable or satellite box, and or a receiver from power for several minutes. It cannot hurt and in many cases helps a lot.

It will allow units to try to reboot. I have had two here recently where the signal from a box was causing the set to shut down or lock up.
failing that get it to a shop and have it looked at.

Posted on Dec 07, 2012

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Posted on Jan 02, 2017

ensapp
  • 30 Answers

SOURCE: LG LCD Flat screen 32 screen blank red light blinking cable on

Bad caps in the power supply. Replace all bad cap or replace Power Supply Module. If you choose to try and fix it yourself yourself will need a ESR Meter to check the caps in circuit. Let me know if this helps.

Posted on Oct 16, 2008

  • 19 Answers

SOURCE: LG LCD flat screen TV - 42LG50-remote control is unresponsive

Sounds like a probable main board issue

Posted on Feb 21, 2009

  • 92 Answers

SOURCE: purple line down middle of screen

I could do with a digital photo to be sure, however it sounds like the LCD panel itself has failed.

Sorry.

Posted on Mar 28, 2009

gsalmen
  • 77 Answers

SOURCE: lg tv automatically turn on and off. Power surge

the software in the main control is damaged. call your lg servicer in your area. he might get you a software update

Posted on Jul 09, 2009

circuitworld
  • 335 Answers

SOURCE: My 42 inch LG plasma turns on and off repeatedly

Theres a short between the start-up processor signal on the interface board and power supply. It keeps sending the same start-byte over and over again to the power board. This could also be a DC high voltage shutdown on the power board its self. Now the tv is in protection mode to prevent further damage. Get it serviced at your local repair center. If its under warranty take it back.

Posted on Nov 04, 2009

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