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Vivo PD42HD plasma T.V. won't turn on, at all. Is there a common problem with the power supplies on these tv's?

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There is a common problem with all devices that have power supplies in them. The law of the universe is entropy. Everything gets worse with time. Some units it's cold solder joints (soldering that wasn't hot enough and cooling before it had a good contact) Others fail from lightning or power surges etc. Aging electrolytic capacitors. The usual part that fails is a voltage rectifier or voltage regulator, or diodes or very low ohm resisters etc.

Posted on Oct 20, 2013

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SOURCE: My plasma tv power supply is knackered. Samsung PS42q96HDX

Not sure but mine is doing the same. and also about 18months old? did you get a solution to this?

Posted on Jul 16, 2010

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1 Answer

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Here's is what you need to look for when describing a problem for troubleshooting purposes:

0) What model is the TV (you've covered that)

1) Does the TV respond to command to turn on?
(yes - continue; no - 70% bad power, 30% bad main board)

2) Once it responds (clicks), does a front LED or other indication show that it turns on? It's OK if there's no display.

(that can be model specific and is not certain indication for anything until known what is specific for the model)

3) If such an indication comes up does it remain on until you act or does it go off by itself?
(Stays on - power supply likely good; turns off - power supply *may* be good, but not certain)

4) If the power indication stays on by itself can you make it go off by pressing the power button or do you have to disconnect from AC power?
(responds to power off - 90% power supply likely OK and 90% OK main board; does not respond to power off - 90% bad main board)

Here is a link for test/repair of the power supply of your TV, hope it would help:

http://www.coppelltvrepair.com/p/895/samsung-pn58a550s1fxza-power-supply-repair-service-for-dead-or-clicking-on-and-off-problem

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It sounds like the power supply board has failed. On TVs that are this age this is a very common problem. Contact the extended warranty company and have them send a tech out.

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