Question about Vizio VF550XVT 55 in. LCD TV
I have replaced the two boards already.
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Posted on Jan 02, 2017
Well i have the same tv , and when i took it apart i switched a few wires around and i managed to get it working again, i can send some pictures of what i did because, i really had no clue what i exactly did by switching the wires.
Posted on Jul 26, 2008
Your message is pretty old but I'll give you my un-copywrited spiel anyhow;
If it just fails to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.
Posted on Oct 25, 2008
SOURCE: VIZIO BLACK SCREEN
That problem is the Ysus board, Sometimes people will replace the Zboard at the same time. If you bought it at costco a couple of years ago you are in luck costco will refund your purchase price, costco has changed the return policy and newer tv's are not refunded, but something to look into
Posted on Jan 17, 2009
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