Every nite at the same time, i get a large black out area on my screen, it only pop's up on this tv, not on the others. when i push the DISPLAY button ,it go's away for a few seconds ,then it pop's up again. it only does it from 10:30 til 11:00 pm. i'm going nuts. dc
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Re: black area on screen,
This could possibly be an issue with closed captioning.While some closed captioning is a marquee-type text near an edge of the display, your television may have an option turned on to display a different channel of captioning that would likely display a large black box on your screen if there is no data to display.This would explain why this would take place suddenly at the same time each night, as well as why pressing the display button would cause it to disappear.I suggest you look into your menu to try turning this option off, then watch the channel you normally watch at this time.If this does not resolve the situation, I recommend you contact your manufacturer’s product support line.
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Yes, this is rare but I have seen it before--not fixable if it is what I think it is----It is what is called a Dome effect---the shadow mask in the picture tube is actually contracting and or expanding depending on temperature---
Directly behind the phosphor coating (the stripes that you see on the screen) is a metal screen--the holes or perforations in it line up with the stripes on the phosphor screen.
Some masks either have a material or a defect causing the dome effect----Not likely to be anything else---a Pin amp problem will not usually act the way you describe but a shadow mask inside the picture tube will act exactly that way.
Note that the large black box goes away when pushing buttons on the tv (ex: the black box will disappear to show the volume setting when changing the volume on the tv but it will cover the picture and the menu display of the dtv box).
This is caused by the closed caption setting of the television set NOT the captioning of the converter box. To fix this you must open your television's menu, find the ccd/closed caption option, and turn it off. This is a frustrating problem as when most people are told to shut off the captioning they try to do so at the box.
Normal dtv box captioning will appear as a small text box at the bottom of the screen as you would expect - not as a giant black rectangle that covers most of the screen. If you do want to shut this off too you will find that you can't do it through the usual menu options (the menu will only allow changes to font, color etc.) - there should be a ccd button on the remote that when pushed will scroll through ccd-1, ccd-2,... off.
It sounds as though the closed captioning has some how gotten turned on. Not all programs are closed caption supported so the box will not show on every channel nor will it necessarily be on the same channel all day. Go into the menu on the tv and ensure the CC option is turned off. You may have to go into set up or preferences to locate the CC portion of the menu. I hope this assists you and thank you for using Fix Ya. If I can assist you further please let me know.
I have a Sharp Tv that had the same problem with a large brownish or black square right in the middle of the screen. It only left about an inch around the edges that you
could see the picture moving in behind the big black block or square.I have DISH sat-elite and the book recomending that I check and see if the "caption settings" were on
or off. They were on. I turned the caption settings off and the large square diappeared.
If some areas of the screen are blue and green while other areas are normal, then either the picture tube has been heavily magnetized or damaged by falling over. If there is any kind of magnetic field near the set, such as a large stereo speaker or elecrtic motor, move them away from each other, unplug the TV and let it sit for an hour or so, plug it in and turn it on. The TV demagnetizes the picture tube with each cold start. If the colors are still off then it may need a stronger external demagnetizer, but if the tube was damaged by shock then it cannot be fixed.