I really need help here. I notice this especially when I play my games on it. The screen shows this bar it has like scrambled lines. It has no color to them, but they are in the way of the picture, but i notice them and it bothers me. But yeah, this bar goes up then another follows, i dont know how to get rid of it
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if you are using a cable box .. then disconnect everything that is feeding signals into the tv ... then get a signal from some other source (like off the air antenna or video camera) ... if the tv still has the dark lines then you have a bad primary filter capacitor in its power supply .. if it works ok off the air and only does it when the cable box is hooked up .. then the cable box has an open primary filter capacitor . ... the dark horizontal bars you see is ripple from the rectified AC power that is not properly filtered ... if the TVs verticle scan rate is 60 hz and the full wave rectified AC amounts to 120 hz ripple then you will see two dark bars across the picture ... since the two signals are not syncronized then they will slip in phase with respect to each other .. thus the constantly moving pattern ..
Originally when 16:9 TVs were produced movies were being shot in 16:9 so that you had a full screen. Now they are being shot in 14:9 as it gives you a more cinematic experience. This is due to the fact that colours look more vibrant when they are placed against a colourless/lightless surface (such as a black panel) as for the bars on the side of the screen LuciferStarr is correct; it depends on the format in which the video was originally produced. For example most older television shows are still shown in 4:3 but newer shows and movies are produced in the widescreen format.
I would have to say it does sound like the CRT is reaching its end. The thing that points this out that the picture gradually gets a little bit better as it warms up. It most likely isn't worth the cost to fix it.
Hope you have fixed this problem by now, if that tv is unserviced, I mean if nobody has ever opened it, it could be a problem with the positioning of your tv, just tilt the tv in different positions and find out the position in which it will show the right fit. If it is serviced, especially yoke is changed, this is rare, it could be because the position of yoke is not aligned properly.
These are called vertical retrace lines. They are going to get worse untill you find the bad capacitor(s) or replace the vertical driver/output IC. Please, if you have not the solid state repair experience, get a pro to assist you in this repair as there are no user replaceable parts inside this set. Good Luck
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