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Watching tv ,going thu channels screen went black no sound When you face tv left top corner little tv with looks like sound bars coming from it Turn on &off the same Wouldn't change channels

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The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Posted on Dec 09, 2016

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Posted on Jan 02, 2017

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What do you think is wrong with my television, it has sound but no picture. How can I fix the problem?


Hi there
I would go to menu on the remote , from there to picture go down the list, if you do not find anything there to help you. Go to Support and to the E manual .
26053790-x3zeawgeewbvgdzeyuixqaom-4-0.jpeg Kolbrun

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Why does my Mitsubishi WD-65737 TV go black for 4 or 5 seconds then picture comes on again with the top left corner says "Cable Box".


Replace service cords, as they might be getting worn and loose. It does sound like that to me. Bad coaxial cables

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Sounds like your LCD Control board went bad. Very small chance it is your main board since you said you cant bring up a menu.

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I have a 50 inch panasonic 720 plasma tv and while watching it last night a large black box with white writing came on in the top right corner of the screen with mute in it and the sound went off. I...


Unplug the TV. Replug in the TV. If it's still there, you probably have a bad panel. Try changing inputs. These panels are non-repairable.

Jun 16, 2011 | Televison & Video

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I believe the "Caption Vision" is selected. By pressing the "Display" button on the remote it should toggle through the choices until "Display Off" appears. That should be all.

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1 Answer

Vizio 46" Gallevia Flat Screen


any display in the corners of channel number av etc ?? if you turn the volume up and down does that show on the display if not likely to be a dead panel

Dec 09, 2010 | Vizio Televison & Video

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Screnn going blank


sounds like sky tv issue, try different cabling

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Black screen but have sound


If it is not a hardware problem, it is most likely the Closed Captioning system.
If you can still see the on-screen menu, go into your TV's menus and disable Closed Captioning.

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