Flashlight test does show the menu. Clicks are audible when adjusting the volume or navigating the menu. So far I have: I have that popular 50in TCL Roku TV sold everywhere and online. You will see black bars on the top and bottom of a TV screen when you watch these films on an HDTV or 4K Ultra HD TV (if presented in their original theatrical aspect ratio). Tighten all the screws and connect all the wires. TCL TVs are some of the most affordable sets on the market, which is especially impressive given that they include Roku streaming functionality. This means that the width of the movie may be longer than the width of your 4:3 TV screen. I have a TCL 48″ Roku Flat screen TV that I laid flat on the table, screen side down. What have i done? It's not always the same colors either. Place the back of the TV panel and tighten all the screws. Therefore, since the width of the movie is wider than its height, black bars are seen at the top and bottom of the screen. It also has a white line extending left from bottom of black gap/line to the edge of the screen. This is a common issue with many TVs. The tv had neither been bumped or had fallen. Other times the T-Con Board itself may be … TV Has Different Color Vertical Lines On Screen – How To Fix? This does not happen on antenna tv or the Roku TV menu. As you’re shopping for a TCL TV, keep the following two price ranges in mind. The tv was turned on and there were vertical line running up and down the entire screen. To fit the entire picture of a wide-screen movie on a 4:3 TV and maintain the proper dimensions, the size of the movie is reduced. I have attached two pictures below which I hope go some way to demonstrating the issue. In this range, expect to see legacy technology perfected: 1080p TVs in smaller sizes. After buying the new T-Con board, place it in place of the old board. TCL No Backlight, Black Screen, Flashlight Test Good, Menu Sounds Good. Black uniformity refers to a TV’s ability to display solid black all across its screen. that situation comes and goes, comes more often than goes. $150 to $499. Black bars get added -- to the sides or top and bottom of the screen -- so the TV show or movie can fit on your TV without bring cropped or stretched. Perfect black uniformity would mean shadows, night skies, and other black objects would look equally dark at any given point on the screen, and that the TV’s lighting is perfectly diffused across the screen. ... (4 or 5) horizontal thin black lines appeared across the top of the screen a few weeks ago. I have a 55” TCL Roku TV (55S405TNAA) that was working fine, then the next time it was turned on has no picture. If I exit and restart it goes away sometimes but if the app (channel) goes to black or commerical it will appear again. Seems to happen only when starting streaming content. Many times this can simply be caused from wiring that is not securely fastened. Only yesterday a number of horizontal lines appeared on my TV screen, only the lower 1/3 portion of the screen though. TCL TV prices. They intermittently flicker between 1/3 of the screen having visible lines to only the top three of four lines. Read More » I was out of town and when I returned I set the TV upright and turned it on. However, since the mid-1950s, many theatrically-produced films have featured wider aspect ratios, including 1.85 and 2.35. TV has vertical colored lines on the screen. Search by giving the model and brand of TV T-Con Board. The TV has a wide black gap line about 2/3 of the way across it. I returned it to the store and got a replacement. A new tcl tv and it now has horizontal lines running across screen until the lines join up into a total whiteout screen. Turn the TV ON, Hopefully now the issue of vertical lines on TV is gone. Vertical colored lines usually show on a TV screen when the T-Con board is not working properly. 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