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Goodmans gtv42p6 plasma tv the tv fires up giving vs voltage but ther is no picture or on sreen graphics although you can tell the screen is lit

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Maanita
  • 1142 Answers

SOURCE: VS-50609 no picture no sound

Seems to be the power button is stuck on the tv itself

Posted on Jun 24, 2008

  • 1 Answer

SOURCE: SAMSUNG PS42D4S PLASMA TV HAS

I had the same problem here but I notice that one of the compoent on the power supply board is melted slightly. Suspect that it might be the cause. the compoent have a symbol of transformer and is grey in color...(look like a cap) ...compoent number is L48

Posted on Sep 14, 2008

  • 93 Answers

SOURCE: vs 7070 no blueuntilwarm and has dark picture

Might be it is worth the buy a new TV,but it is not worth the money to fix it. It is a serious problem!
solutiondoct

Posted on Nov 22, 2008

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Please adjust, clean very well, and tigh the connector from Reed switch see the diagram attached.

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Last night watching tv, picture cut off (black screen) but power light on set stay on. then after bout 30 seconds the power button went off. Turn set back on , powere light lit but no picture and again...


Power supply board is dying not giving the tv correct voltage anymore.The power supply board,that the board power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

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LG 50PG25 Plasma TV, black screen sound still works.


this faint picture issue is usually caused by a bad z sustain board. it is the smaller scan board on the right side of the tv when viewed from the back. it has some large cables that energize the plasma panel, dont confuse with the y sustain which has the tiny ribbon cables that address each line of the picture.
there should be a # on the board indicating the part number, plug it into a search engine to find parts.

this could also be a low voltage or something else, check the Vs and Va voltages and confirm theyre correct with the ones listed on the sticker inside the tv. Be careful this is dangerous and you can get shocked if you not familliar. The heatsinks can be energized and shock you , exercise caution. if you order a z sus board, make sure you can return if it doesn't fix. I'd say 95% chance its a z sus

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Most likey its a bad panel, you can try adjusting VS voltage on Y main board, if this is to complex you will need a tech

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1 Answer

TO GET THE DIFFRENT BETWEEN LCD VS PLASMA


LCD
LCD stands for liquid crystal display. These types of displays have been around for awhile and are commonly used with computers. One reason for their big popularity is the ability to produces a better picture than CRT monitors but also being much thinner.
Pro’s
  • Low Energy Consumption – LCD monitors use very low amounts of power. This is why it is very commonly used in battery powered devices.
  • LCD screens also reduce the amount of glare on the screen which can be very beneficial if your TV is in a room with lots of light.
  • If an image is left on the screen too long, LCD screens are less likely to experience the image being burned into the screen. If this does occur, it’s easier to repair than other types of TV’s.
Con’s
  • The viewing angle of an LCD TV is typically not as great as Plasma but the difference is not great enough to make a huge difference.
  • LCD TV’s can sometimes get dead pixels which aren’t typically covered under warranty. Although they are very small, they can become very annoying.
  • Brightness levels aren’t as great as Plasma and it’s not possible to display darks quite as dark.

Plasma
Plasma technology hasn’t been as widely used as LCD in previous years but has become very popular in large HDTV’s. Although they have historically been more expensive than LCD TV’s, they are becoming more comparable in price.
Pro’s
  • Brightness and color are the major advantages of Plasma TV’s. They produce rich colors along with very deep blacks.
  • Their wide viewing angles allow more people to be able to watch TV comfortably.
  • The pixels of Plasma TV’s are lit individually unlike LCD screens. Because of this feature, the pixels can be completely turned off to display truck black colors.
Con’s
  • The lifespan of a Plasma TV is typically shorter than other types of TV’s. The lifespan can be extended by turning down the brightness of the screen.
  • Plasma TV’s are more susceptible to screen burn-in where an image is “burnt” onto the screen when left on the screen too long such as a network logo in the bottom right corner of the screen.
  • Plasma TV’s require a panel of glass to cover it. This glass can reflect light and make it difficult to see the picture. If placed in a dark room, this typically isn’t an issue.

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