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P50hdm hello,do you know how to trouble shoot the y and z boards on the vizio p50hdm?

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  • smarkle Dec 08, 2008

    first of all thanks so much for replying. The TV has no picture at all or sound. all my boards are made by LG. thanks again for your help.

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Ok first i need to know is the TV showing anything at all or just a blank screen ? And if you know what the Y or Z board is who is the manufactured of the plasma panel is ?

Posted on Dec 06, 2008

  • James Peters
    James Peters Dec 13, 2008

    In plasma tvs your if its the same as other manufactures the board on the left and right are the Y and X boards they control the display.

    If you dont have sound also then its not your Y or X board. its probably your main board ssb ( usually the main board that the av/hdmi/coaxial all plug into.

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I have a Vizio p50hdm while watching heard a pop noise and tv went out cant turn back on.I replaced main board and power board and still doesn't come on any Ideas?


The power amplifier chip (which goes "pop" when it goes bad) may be located on the board where the IR sensor is. Sometimes (but not always) you can make the TV come on by holding the power button in _until_ the TV comes on. But that usually only works when the chip is "going" bad. If you heard the pop, it's probably shot. Also, check for a fuse on _any_ of the boards, and possibly a main fuse at the back of the TV.

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Check and replace damaged component/s at it main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts. Do asearch by type in the brand name of your device at its search box.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

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1 Answer

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Check you voltages before just swapping out boards. Although a YSUS is common for no picture, so is your upper and lower Y Buffer boards or the panel itself. Check youe -VSC voltage. Does it look like it is being loaded down? If so then your YSUS is not the problem. You can run the set with just the upper or lower Y Buffer boards untill the load is gone. That will let you know wich board to replace.

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Hello
I've with me the service manual you need; is for Vizio P50HDM; but I can't send it to you by this site as you know. If you send your email address to me by FixYa comment box, I'll send a copy of it to you by return mail. OK.

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1 Answer

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1 Answer

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