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Vizio STILL out after mainboard swap

I was told here that replacing the main board may solve my problem...guess what!? I still have an expensive boat anchor!

I turn it on, green light comes on, then shuts off after 30secs or so.

The screen is black, I cant tell if sound works because I dont get a menu or text on screen...just black.

I really would like to keep it if I can, I cant afford a new one.

FYI, if anyone needs a main board let me know, the one I took out must be fine because the new one did nothing.

Posted by on

  • srs273srs Feb 09, 2009

    Wait?

    I paid for help to get an answer about a laptop?



    Someone PLEASE help me...Green light comes on then goes away, I hear relays clicking but no picture.



    main board is new!

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2 Answers

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I was reading your other post and that failure does not seem like a main board failure but either a power supply or a Y sustain board. If you are able to measure all the voltages from the power supply to the other circuitry, you could isolate the problem.
If all the voltages are found normal then is more likely that the Y sustain board is defective.
Let me know if you require further assistance.

Posted on Dec 04, 2008

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Try removing the battery and just using the power connection. If it turns on then bing.

Also, check the RAM.

If it has two sticks, try swaping them out one at a time and see if one works by itself, if it does, then you have a bad RAM Stick.

Posted on Dec 04, 2008

  • Chris Busch
    Chris Busch Dec 04, 2008

    Wait, sorry, thought this was a leptop issue, please disregard above.

  • Chris Busch
    Chris Busch Dec 04, 2008

    How is it connected or what is is connected too. what does it get the signal from ? Computer? Cable? AMP?

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Posted on Jan 02, 2017

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