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No Picture. Screen remains totally Black. What parts do I need to replace?

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should troubles shoot. Contact any service technician. The circuit will differ with models and versions.
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Posted on Apr 12, 2015

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I have sound and the picture pops up right when the tv starts up but then fades to a very very light color (almost totally black) and volume continues.


Back - light problem indeed. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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then your optical section has fault.

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1 Answer

HI, I HAVE SOUND BUT NO PICTURE


hi, if your tv has totally black screen the cause is either the inverter board get busted or the back light need replacement. if their is a white screen display but no picture, you must check the t-con board for screen panel display which have defective or burnt component parts .

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1 Answer

My hp laptop screen goes black after being on for a few minutes


The problem could be the backlight or its inverter is bad. IF picture remains but lights only go out. Also it is normal for the screen to go black if the laptop is not used.

If the picture itself remains on the display but it just goes dim, try turning up the brightness, if noting happens, most likely the backlight of the screen or its inverter is or has gone bad.

Would need to be confirmed in person.

If the picture does not remain on the screen and the laptop shuts off, your charger might not be working, and your battery is low.

Would need to be inspected in person.

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1 Answer

Computer on with a black screen


Sounds like the backlight or the inverter that runs the backlight in the screen is faulty. You can connect it to an ordinary external monitor which should show the picture correctly as long as there is nothing else wrong.

There should be a socket on the left hand side I think with 15 pin holes, thats the monitor connector. If it does work ok then you will need to take the laptop to a technician to replace the faulty part/s in the screen.

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1 Answer

No picture total black screen


Total black screen is usually as a result of 2 things. The first being either the contrast or brightness being reduced to the lowest point. this makes the screen display to look like it is not showing anything at all.
The other being that the picture ic of the unit is blown. In this case you need to refer the unit to an expert to trace the particular ic order a replacement for it and replace it.
Hope this solution has been helpful?

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this is most likely the sustainer board(s) problem. Replacing the sustainer boards should correct this problem for you. you can get the parts at vancebaldwin.com

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1 Answer

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Try to replace the Logic Scan board on the upper left side of your tv. The part no. is printed on the board and you can order it from Panasonic's Website. Also check the Service Manual for the part description and part no.

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