Question about Vizio VO47L 47 in. LCD TV

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Screen goes dark when the picture has a lot of black or dark color in it

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The electrolytic caps need change on the power supply module, or replace the power supply module.

Posted on Mar 24, 2011

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Posted on Jan 02, 2017

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Sounds like your Tcon board is giving issues.

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Plasma screen problems


Likely if picture comes on and is very dark like a black swirling cloud or similar you could have a bad PDP or Plasma Display Panel.

What can happen is the panel is a sealed unit with an inert gas inside---if there is even a tiny rupture inside the panel the gas goes and bingo====very dark screen that is almost impossible to see the picture on.

If this is the case it is fatal as Panel is more than a new set discounting major labor to replace it.

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Magnavox 32MF337B/27 power supply works and like another writer when power is turned on the audio works the channels change and you can tell that all remote and on set keys work, but no picture except an...


hi i have a 50" magnavox that has a problem, i was looking at several websites and i find out the dirfferent posibilities.
in your case i have 2 posibble answers.
1) negative image
tv turns on and shots down in 2sec
flashing pixels on screen
dark image
has sound but no video
screen goes black and then return to normal picture
vertical color lines on screen no video
vertical color lines with video
vertical bars on screen
horizontal lines on the image
picture goes red after while
IT COLUD BE (X or Y or Z SUSTAIN BOARDS )

2) just left part of screen working
just right part of the screen is working
vertical and horizontal lines on screen
part of screen not working
some functions not working
no video but has sound
functions not working at all
IT COULD BE (LOGIC CONTROL BOARD)
TErry HerreRA

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2 Answers

Picture djust


Put it in the custom mode.Put the contrast to the max.Put every things in middles may be colors for less.Now u have the desire ajustment u want?

Aug 19, 2009 | JVC AV-27530 27" TV

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Toshiba Plasma 42


plasma42 color flickers in and out and now its just snow,now its black screen. still have sound.please help me.. what board should i replace??

Dec 29, 2008 | Toshiba Televison & Video

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Color on the picture is dark


You can adjust the brightness on the back of the set which says screen. put a mirror so you can see the screen and slowly turn the screw clockwise until you can see the picture.

Jul 10, 2008 | RCA F36650 36" TV

2 Answers

Dark picture


do you get all three colors? red, blue and green?

Dec 16, 2007 | Panasonic PT-51G44 51" Rear Projection...

1 Answer

Picture goes dark


1 your problem is in video section 2 if it is ok then check power supply for any components defective.

Sep 15, 2007 | Sony FD Trinitron WEGA KV-32HS500 32" TV

2 Answers

No Picture


Did you have color problems in past? Most of these sets have convergence problems. Amps goes out. But you should have seen some type of distortion from color, red,blue, green. If no color problems then maybe vertical ouput out or horizontal output bad.

Sep 09, 2007 | Hitachi Director's Series 65XWX20B 65"...

1 Answer

Rca p52771at - dark picture


Sounds like a bad screen asy,part number 204809,must use the generic,or you could have weak tubes,if so you may just need to turn up the screen drives,this part is located in the right top of the set with the back removed,if no cracks are present adj. the three marked screen's,turn the color all the way down in your menu and adj. for a black and white picture.

Oct 07, 2006 | RCA P52771AT 52" Rear Projection...

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