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LG Webos model 60LB7100 screen goes dark after 30 seconds. Flash light test shows that the screen is on. Sound and everything work. Just the backlight leds cut off after 30 or so seconds. I took the back off the TV and noticed that when I turn it on there is a small green led on the brown board that the power cord plugs into. The green light blinks 3 times and then the backlights turn off and then it starts blinking 9 times until it goes into sleep mode where it then doesn't blink. Being an ex HVAC tech I figured this is a code telling me what the problem is. Could someone with knowledge of this share with me what the codes mean? I hope I have given enough info but if you need more please feel free to ask. I really appreciate any help.

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Anonymous

  • 138 Answers

SOURCE: philips 42pf7321d/37 blinking power board question

The probleis with one of the maina boards and trouble shooting would have to be done to see which board is bad.

Posted on Aug 19, 2008

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Anonymous

  • 138 Answers

SOURCE: 42PF5321D/37

Measure the connector from the logic board to the power supply the second pin from the left it will say Vs_ On if the set has 3.1 volts the problem is the SSB or the logic board. On the logic board there should be a solid led and a flashing led that shown that data id flowing and the problem is the SSB. The SSB is easy to replace just remember what you tokk loose and from where. You probely will save money that way. If the set is in warranty or just out of warranty contact Philips 1-888-744-5477 and see what they can do first.

Posted on Aug 20, 2008

localwonder

Michael Masters

  • 6784 Answers

SOURCE: TV cant be switch on, RED LED diagnostic Blinks .. 3 times... then 4 times. Please advise probable cause and send sTV hcematic diagram.

Hi, this is main board failure and you will need to replace this vital board. you power board is fine but, it is unable to send a proper current through the main mother board due to the damage at hand.

Posted on May 21, 2009

satavlad

Alex Zoubkov

  • 405 Answers

SOURCE: Sharp AQUOS LC-46D85U green LEDs blinking, no picture, no sound

Sharp warranty is the way to go.

Posted on Oct 25, 2009

Chi Chu

  • 8457 Answers

SOURCE: LG 50 IN. PLASMA TV MODEL # 50PC1DR . POWER

Power supply board is dead,replaced the power supply board will get power.

Posted on Jan 27, 2010

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