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Andy Posted on Oct 18, 2012

My LG 50pk590 plasma tv turns its self off as soon as I turn it on. I've tried turning it off and back on by the mains but still nothing. Please help

  • Ravi Bajaj
    Ravi Bajaj Oct 18, 2012

    First of all you need to call the technician and ask that might have the problem of screen if that is the problem then without contacting the technician it is not possible.

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  • Contributor 16 Answers
  • Posted on Oct 18, 2012
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Same thing happened to mine and some guys came to look at it, turns out the main board had to be replaced, they say it went because the dust was blocking the cooling fans. I think mine is more modern as when ot went off the power light flashed 8 times, which was a code for what was wrong. See if yours flashes anywhere and look it up.

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  • Posted on Nov 19, 2012
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Hey kangus2000

This issue is a common, but hardly talked about from LG. Your tv is probably 1 or 2 months out of warranty, and now you're hearing a series of clicks. ... If you have the courage to open the back cover of your tv, and you do "NOT" see any bad (bulging ) capacitors on the power supply, then it could be the voltage regulator. After weeks of fighting with LG to replace my tv, i decided to fix it myself. i'm proud to announce that my 50PK540 is now working. want proof? Take a look at the video i posted on youtube, then you will have a better understand why your tv is clicking... I'm also selling the repair kit for this power supply board on ebay now. LG power supply Board model number EAY60968801. With anyone of these PCB # EAX61392501/7, EAX61392501/10, EAX61392501/11, or EAX61392501/12 with the parts if this kit, I've also fis several 50PK750 models, Some clients have send me their broken power supply board, so I can do the repairs. Please Make sure that you've already gone through the process of troubleshooting and testing your tv's power supply board before making any purchases.. I recommend that you get a tv tech to check it out, because every tv is different. Email at [email protected] if you have any questions.and watch the video: part 1 & 2


Repair kit on Ebay


http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=200849231403


Youtube video PART 1 & 2


http://www.youtube.com/watch?v=I9wF0OLyV0k

http://www.youtube.com/watch?v=vHrv5XaDULI

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Anonymous

  • 3130 Answers
  • Posted on Oct 05, 2006

SOURCE: plasma tv GTW-P42M102

Sorry to tell you a common problem with these sets. It is a bad capacitor in the main power supply.. There are really about three of them that go bad from time to time to cause this problem... If your not a tech you should find an authorized repair facility as a non authorized is not going to know what to do to fix it and it will most likly cost you double to repair. Good luck and let us know how you got it fixed.

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Anonymous

  • 2 Answers
  • Posted on Feb 23, 2009

SOURCE: TV won't turn on, red flashing light

Hold The Off Button for 20 sec should make clicking noise switch off at power and on again should be working

William

  • 188 Answers
  • Posted on Nov 02, 2009

SOURCE: Lg 42pg20 Plasma Will not turn on

If there is no LED burning to indicate there is power than the power supply is faulty.Repair is not verry easy to do with these complicated power supply's.

Anonymous

  • 416 Answers
  • Posted on Apr 19, 2010

SOURCE: LG Plasma TV automatic turn off right after turn on

You have some dried out capacitors on the power supply. Samsung has a major issue with this right now and I made a tutorial for that repair in my Tips & Tricks. Your capacitors will not be the same, but identifying them and replacing them will be. Best advise I can give you: Stop using the TV and unplug it until you get it fixed. When these caps go bad, they draw down the voltage they are filtering. I've seen some TVs that had secondary damage because of this. I hope this was of some assistance, best wishes.

Anonymous

  • 1099 Answers
  • Posted on Jul 02, 2010

SOURCE: LG 32" Plasma TV power-on problem

Hello,

Your power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
hope this helps...

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I have the LG Plasma model 50PA550. the TV turns on for a few seconds, then turns off by its self. The more I continue to turn on the TV the quicker it turns back off (until it just doesnt click on anymore...

If you're an electronics DIY...I had the same problem, TV turns on then immediately turns off. Fixed it with an 89 cent capacitor. TV is an LG 50PA5500, two and a half years old. Suddenly stopped working...would switch it on and it would immediately turn off. Sometimes if I left it unplugged for a while and plugged it back in, then it would click at intervals of 1 & 5 seconds repeatedly.

Inspection of the main power board showed C802, a black rectangular film capacitor at the top of the board between the transformer and heatsksink was bulging at the sides. Found the part, 0.022uF 1.25KVDC, on DigiKey (p/n 495-1360-ND) for $0.89 + ~$3 shipping (much cheaper & more reliable than eBay!). Replaced, TV working like new again.

67acb480-9087-4865-a464-b3b7b0ac10ac.jpg
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The top candidate is the main board, the next is the Y-Main board.

Here's a link for repairing the power supply board of LG 42PG20, which also contains a link to how to test your own board to see if it is good or not:

http://www.coppelltvrepair.com/p/716/lg-42pg20-ua-power-supply-board-repair-service

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