Picture Scrunched at base with black "wide screen" margin at top.
I am unable to get some channels and the lower third of the picture is patially lost and compacted at the bottom of the screen, leaving a black "wide screen" margin at the top of the screen. The set was built in 1993. Would it be worth fixing?
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The picture is controled by the zoom on the tv remote and on the reciever remote. if you're looking at Wide screen containt the your screen will be black on the top and bottom, zooming will make it fit but you will loose some left and right info. Only HD containt formated for home tv's will, like Oasis, or National geographics, ect will give you full screen. Wide screen is for Movie theaters not TV. This realy sucks but to get a large Wide Screen Picture, You have to buy a supper large tv otherwise, the Wide screen image is small and wide and preaty much anoying with a short wide picture with black bands on top and below.. Sorry. We all have to live with this stuff.
1) Power your wide-screen TV on and turn to a channel that is displayed with bars on the side. You need to leave this channel on to ensure you have properly adjusted your wide-screen TV.
2) Find in your TVs settings where you can "stretch" the picture. Refer to your wide-screen TVs owner's manual for specific instructions. Some TVs may not refer to this adjustment as "stretch." You will be able to find all the information your looking for in the owners manual.
3) Adjust settings back to normal if you want to watch a program shown in 16:9 format. Keeping the screen "stretched" will cause programs shown in 16:9 format appear zoomed in, making the picture look really different.
Well, first the 100Hz issue. Your TV will display a descriptor or the signal it is receiving, not a descriptor of the picture you are watching. Your TV panel has a native resolution and frequency. In your case, that frequency is 100Hz. Everything, like it or not, must be converted to 100Hz for the TV to work. In your manual, you are simply adjusting setting which smooth the picture and make it flow better than it would at 50Hz. This feature is slight of hand and is probably working just fine. As for the picture fitting the screen; HD programs fill the screen of HD channels.... SD (Standard Definition) programs use black bars on each side when on HD channels. You can use any available wide or picture size feature your TV may have to stretch the picture. You may be unable to stretch the picture, due to restrictions (some TVs will not resize HD formats).
If only 1/3 of the picture shows you have a hardware problem. If you see the entire picture but it is scrunched in a smaller portion of the screen you may be able to adjust display settings. If the latter see what you get in vga mode or safe mode. I suspect hardware form the little info you've given
The bottom third of the screen is black and the rest of the picture is scrunched up.
it is a part failure so not possible to adjust it.
as it has developed watching tv so it is a part failure in vertical section.
in vertical section there is a feed back ckt.it is due to electrolytic capacitor (most probably)or any other component but in feed back ckt.
it is a common failure
it is not major problem.can be rectified at your place with in no time by a skilled tech.
Usually that symptom is caused by cracked solder joints on the vertical output IC. As the IC starts heating up, the picture starts breaking up at the top with several "dancing" dark lines appearing, the top scrunches down and then when the vertical quits altogether, the screen goes completely black. A good slap on the side of the TV might make it happen faster or clear it up temporarily. If you have experience working on PC boards then you can resolder the pins of the vertical output IC but if you have never soldered parts on PC boards then allow a qualified tech to handle it for you.