Question about Panasonic TH-42PD50U 42 in. Plasma EDTV

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Panasonic VieraWidescreen Plasma TV Model No TH42PA50A - Power standby mode and tripping off automatically, Please help

Hi there, It has been year since I dont have problem any more with Plasma, suddenly my Plasma TV is getting in standby mode and it turns of automatically with RED light- aledy (redlight -near ON/OFF Switch of TV)keeps constinously blinking To restore back for temporary solution, i switch off the power completely and switch back again, It blinks for sometime and plays very well for first 40 minutes, then it goes again in standby, then when i do the same process , this works for 10 minutes and then it goes to stand by I checked all the setup menu , and made sure that the OFF TIMER is not activated I am out of warranty and now I called a servce centre , they give my high quotes to just see for inital investigation I doubt wether a change in power cord can save the problem , I am from australia, and there are no current fluctuations in my area, Please advise Thanks and regards Satish

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  • chriswa Mar 23, 2008

    i have the same problem has anyone found out why and what is needed to fix.

  • texas10380 Jun 30, 2008

    Same problem here. Panasonic TH-42PV30 (4 years old) Read on US website that it is a common problem with 6th Generation Panasonic Plasmas. Apparently it can be repaired with a 25cent part. I contacted Panasonic (even though it is out of warranty) They wouldn't confirm the problem and could only provide details of an authorised repairer.

  • Anonymous Jul 28, 2008

    my panasonic th-50px75u plasma turns itself off after approx. 50 minutes. the red light flashes 8 times. i have to unplug set for awhile to reset it.

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Hi, you did not say how many times the red led flashes. This is an important clue as to where the problem might be. On some 6th generation plasmas, a regulator in the power supply could cause that problem and had to be replaced with an improved version.

Posted on Jul 21, 2008

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1 Answer

Hi I have a panasonic viera TH-42PA50A blinking red light and it just keeps blinking any ideas what it could be


it is not a good sign. If the tv screen is dark (no picture) and no sound but the standby red light is continuously blinking then it could mean the power supply board in tv is faulty.

Usually a few burnt out capacitors on the board but hard to replace yourself unless you are experienced in this sort of work. From the model it appears a reasonably recent unit and you may want to get it checked out by a repairer at least to get an estimate of the cost.
See this site to get some idea of the part costs.
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The 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.


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We should try a hard restart first, unplug the tv for a couple of hours then try again. Let me know how it goes and please rate this solution. lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

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