Question about Vizio P50HDTV10A 50 in. Plasma HDTV

2 Answers

My vizio P50hdtv10a has major issues. I turn it on and i see lines, then it shuts it self off and i notice that the stadby /poer light flashes green/yellow. I replaced the y-sus board and the lines went away but tv still shuts off? help

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  • jeremyparypa Aug 25, 2010

    i checked the capaciters and all look good. can i test the board somehow

  • jeremyparypa Aug 25, 2010

    Can the power supply be tested?

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  • Vizio Master
  • 11,800 Answers

The tv shuts off because the power source detects an overcharge on one of its exits and shuts itself down for protection. You need to measure the voltages at the exits of the power source to find out which is the faulty one. Once you will know that you should check the components from the power source that generate that power line - rectifier, filtering capacitors, coils and the stabilizer transistors (if present). Once you are sure they are in working order you must investigate the parts that line is powering.

Posted on Aug 25, 2010

  • 3 more comments 
  • Azrael SRL Aug 25, 2010

    Yes, just use a voltmeter to measure the output lines and an ohmmeter to check for shorts.

  • jeremyparypa Aug 26, 2010

    It seems i have 5 volts going to the Y-sus board on a couple of lines and about three volts on the rest of them.

    Will the tv shut its self off if there is no inputs connected?

  • Azrael SRL Aug 26, 2010

    The high tension ~120volts is missing, find out why - but most like the ysus board has died.
    No, the tv will just display an blank image.

  • jeremyparypa Aug 26, 2010

    The y sus , i allready replaced. So i sould have a 120v lead to the Y-sus board. Could the main control board be the problem/

  • Azrael SRL Aug 26, 2010

    Yes, if there's a short in it that is triggering the protection - check the voltages there. If they are ok then the power source is faulty - check its components.

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  • Master
  • 4,889 Answers

Tv shutting off is due to a overload on one of the (5V, 9V, 7.5V) lines on the power board. A variety of component failures can cause this. If you want to go the easy way then a replacement power supply board should resolve your problem.

Sai.

Posted on Aug 25, 2010

  • 1 more comment 
  • eagle338
    eagle338 Aug 25, 2010

    Yes it can be. But you are gonna need a service manual that has a proper schematic diagram. However I do not appreciate you voting me down as it affects my rating in a negative way.

  • jeremyparypa Aug 25, 2010

    Sorry, i wasnt aware that i " voted you down" no harm meant. Can i fix that anyway?

  • eagle338
    eagle338 Aug 25, 2010

    Yes but Vizio service manuals with schematic are hard to find. I did find one that does not have the schematic, but it should tell you the location of the problem and possible components involved.
    http://www.servicemanuals.net/ServiceMan...
    I have also found a replacement power supply for 90 bucks(If you are interested) but I suggest you verify the part number if you wanna go for it.
    http://www.shopjimmy.com/vizio-3501q0015...
    Otherwise component level repair is fine with me.

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