Question about LG 60PK550 TV

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I have the LG 60PK550 model tv and i have a lot of buzzing noise coming from the set and wondered if this is common in plasma tv's of this size due to the amount of power they consume ?

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No,the power supply board have problems.Those power supply transformers on the power supply board,causing this,high voltage flow going through those transformers.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Posted on Oct 18, 2010

  • 2 more comments 
  • Anonymous Oct 18, 2010

    so is this something that LG will look after...the tv is less than 2 months old ?

  • Chi Chu Oct 19, 2010

    Call LG for a warrenty repair,the power supply board LG probally replaced it for u under warrenty repair.

  • darren_x Oct 21, 2010

    I emailed LG about this, too. It is repairable under repair. The service rep said that this is a known problem with "some units", meaning that not all units of this model number have this problem. I am buying the same TV next week.

  • Chi Chu Oct 22, 2010

    So LG going to repair it for u under warrenty?Or u going to return this tv,where u bought it and get another one?

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I have a 50" LG LCD flatscreen TV. The screen is white and blurred out. I got the TV from a friend and am wondering what is wrong with the screen. There is also a buzzing noise coming from the back.


T'Con board fault. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

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Sounds like main board fault. Anyway visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
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It's obvious that the power supply failed. The most common parts in a power supply are a thermistor or a voltage rectifier, possibly even a voltage regulator. diodes or resistors can act as fuses too. A ringing sound can come from a fixed coil that isn't kept still with enough epoxy. Hope this helps.

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A common cause are failure of decopling capacitors in the audio section, and or the circuit board power distribution that feeds the audio board. Most of the capacitors are surface mount components. The standard fix is to start by changing the circuit boards that have the defective parts.

If the set is under warranty, call for warranty service. Out of warranty service is expensive for these TV sets.

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