Question about Vizio XVT472SV 47 in. HD-Ready LCD TV
Sounds like a failed or at least failing power supply / power board
inside the TV.
Unfortunately this is a very difficult repair, and unless you are an
electrician I would not recommend attempting it. You will want to
contact a local TV repair person in your area if you are sure this is
out of warranty, more on that in a bit here. This is actually the
most common problem with this type of TV, I see it every day, it just
happens - sometimes with new TVs and sometimes it takes many years for
it to happen.
If you think it may still be under warranty please contact the manufacturer to file an RMA. If you happened to purchase the TV with a major credit card (not a debit card) there is a good chance it may still be under the free extended warranty most credit cards place on electronics. Please contact your credit card company to inquire if they do this, and they will be able to file the claim and get you a refund for the TV.
If you want to attempt the repair yourself please let me know and I will get you the part number and a place you can purchase it from for what you need.
So sorry that I don't have better news but it is definitely a power issue internally.
Posted on Nov 07, 2010
If not even the stand-by light is off then tv's power source has suffered a catastrophic failure - either the power transistor or the transformer have failed. Unfortunately when this happens the rest of the components - starting with the rectifiers and the modulator - are also destroyed.
Sorry, there is only one thing left to do: the power board must be replaced. This is definitely a job for a repair shop - they must also check the rest of the tv, if you're really unlucky every single time you tried to start it you have caused even more damage to other components.
Posted on Nov 07, 2010
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Posted on Jan 02, 2017
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