Check the BZW04145 diode across C720, if short circuit, replace and also replace opto-isolator IC704 (MOC8106) and IC706 (TL431 voltage reference). You can put an 817 opto-coupler in diagonally. The set could manually be placed into A/V from the tv's front end controls. The cure was to replace ZD301 (ZTE251). I am no expert, but I will try to explain A standard TV screen is made up of 480 lines from top to bottom. Retrace lines will only happen... Dec 18, 2010 · The old black tubes were notorious for convergence problems and for grille misalignment that would cause vertical lines to look wavy. The newer flat tubes have HORRIBLE geometry. Sometimes even brand new out of the box ones have horizontal bowing and shit you can't fix in the service menu! I've had two KV-24FS120 where half the screen was warped! Mar 23, 2012 · The problem with the vertical sweep was a bad pot on the convergence chassis. The B+ lead from the vertical output transformer goes through three pots before being connected to the +400v line. The line is connected to a center tap on a 100 ohm pot, and that connection is bad. Otherwise the pot is OK. problem with crt lg tv. Thread starter ... my tv is ultra slim lg it after 1 hour at top of image creat many horizontal lines i replace 3 capasitor in vertical zone ... The vertical line is always the excact same place on the screen. If the psu was the problem the line should change its position sometimes right? ... i have tried both on a crt tv, a lcd tv, and on ... A BOE 55 inches screen panel with complaint problem vertical lines or bar on the left side of screen. It looks like the panel X-COF defective, but it’s not. From the photo below, the screen shows the rule of vertical lines on left side panel. This type of screen/panel problem normally cause by T-con board or TV Mainboard. Crt tv vertical section diagram Most people also think the vertical lines JVC lists are WAY off - as evident by counting horizontal lines on blown-up photos of a certain area of a game and comparing the "800" JVC to a 600 TVL Sony PVM for example - and the 600 TVL Sony STILL has more lines in that specific area (meaning the JVC is even less than 600 TV Lines). Subject: Problem with Videocon LCD20X TV Hi, I had purchased Videocon 20" LCD TV on 9 April 2007. Now, just after one year it has started giving trouble. Recently I found some yellow bright vertical line on the monitor and called up service technician. Mar 28, 2017 · By Jestine Yong on March 28, 2017. The complaint of this CRT TV was one horizontal line (about an inch thick). One horizontal line problem in CRT TV or Monitor is actually very common and the usual cause were dry joints in the vertical output IC, missing DC supply voltage to the vertical output IC, improper DC supply voltage (usually low dc supply voltage) , bad surrounding components, bad vertical output IC and etc. See full list on ifixit.com A shutter speed exactly equal to the vertical scan period will capture a full scan, but there still might be a narrow band (either dark or light) somewhere in the image if there's any mismatch in the timing. To minimize the banding, use a shutter speed that spans several vertical scans, but this only works if the image on the CRT is static. lg lcd led tv no display & vertical lines bar problem September 2020 8K,4K,2K, LED TV, OLED TV, QLED TV PANEL AND MAIN BOARD REPAIRING COURSE ONLINE ONLY FOR INTERNATIONAL TECHNICIAN CONTACT ONLY FOR WHATSAPP : +919617914077 #... My Tv is a Chinese brand and the line appeared after 3 months. The problem is I move the Tv everyday from room to room so something came loose. I connected the ribbon connector firmly and the lines disappeared but once I reassembled they appeared again. I turned the TV upside down and the lines disappeared. Dec 16, 2005 · RustyD, your symptom is a vertical output problem (and has nothing to do with the tube itself). It is very common and is the result of some capacitors in the vertical circuit deteriorating with age. As long as you get it fixed before any active components fail (like the output IC) it is generally a $50 - $75 repair. Sep 09, 2019 · USED VERTICAL IC IN COLOUR CRT TV WHICH VERTICAL IC CONSUMPTION AMPERE SHOWN HERE . LA78040(1.8A) LA78041(2A) ... Videocon service mode Service Mode : Videocone CTV ... Nov 27, 2017 · dear,justine yong and dear brothers,please help me to solve my videocon ctv 21” with woofer.here the problem is my videocon tv shows the picture but the picture is very dark with full brightness with white retrace lines from top to bottom of the screen.i measured the b+ voltage but the 180v line coming from LOT is connected to crt base pin.and 3pins are hooked from the main board to crt base ... Mar 11, 2008 · If there is a vertical output IC,it may be defective or the blanking input to it may be corrupted. Theproblem may be as far back as the sync separator. Then again who knows,maybe wait for the schematics. Single Vertical Line: CAUTION: To prevent damage to the CRT phosphors, immediately turn down the brightness so the line is just barely visible. The cathode-ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam(s) onto the screen to create the images. We deal with problems like TV screen repair, screen replacement, dead pixels, ghosting, burn-in, vertical lines, horizontal lines, dark picture, incorrect colors, fuzzy picture, TV turning itself off, distorted sound, snowy picture, screen breakage, black screen, blue screen, green screen, squares/tiling, frozen TV screen, rolling & distorted ... Aug 27, 2007 · Shortly after there was some sort of electrical failure on a circuit in my house, about 8 vertical lines appeared on my computer monitor and TV, both of which are CRTs. They span the entire width of the screen, but are very thin. Still, it's easily noticable, and it's distracting. Nov 27, 2012 · CRT TV No vertical deflection after changing vertical ic and capacitors around it.NOTE: (when i change the vertical deflection expand to 1 inch and i can read VIDEO1,CHANNELS.) what is the problem can you tell me what it is because i already spent $4 and still the problem is not solve. i dont know what the model is but it is a samsung brand here are some pictures i take.(THE MEANING IF RED ... A BOE 55 inches screen panel with complaint problem vertical lines or bar on the left side of screen. It looks like the panel X-COF defective, but it’s not. From the photo below, the screen shows the rule of vertical lines on left side panel. This type of screen/panel problem normally cause by T-con board or TV Mainboard. Mar 11, 2008 · If there is a vertical output IC,it may be defective or the blanking input to it may be corrupted. Theproblem may be as far back as the sync separator. Then again who knows,maybe wait for the schematics. Single Vertical Line: CAUTION: To prevent damage to the CRT phosphors, immediately turn down the brightness so the line is just barely visible. Aug 27, 2007 · Shortly after there was some sort of electrical failure on a circuit in my house, about 8 vertical lines appeared on my computer monitor and TV, both of which are CRTs. They span the entire width of the screen, but are very thin. Still, it's easily noticable, and it's distracting. Horizontal and vertical lines on an LED TV screen can be quite irksome and can hamper our viewing experience. It is one of the most common faults that come in a TV. Horizontal and vertical lines on an LED TV screen can be caused by a fault in T-CON Board, Scalar PCB, COF IC or Display Panel of the TV. Let’s understand all the terms in detail: Dec 25, 2013 · See if you can bring up the menu. If not, and all you see is a single bright vertical line at the center of the screen, then the TV has no horizontal deflection. It's not fixable anywhere outside of a fully equipped service center. The TV is brand new, so it should be returned to the store for replacement or refund. TV has vertical colored lines on the screen. This is a common issue with many TVs. Vertical colored lines usually show on a TV screen when the T-Con board is not working properly. Many times this can simply be caused from wiring that is not securely fastened. Other times the T-Con Board itself may be … TV Has Different Color Vertical Lines On Screen – How To Fix? Read More » Es tv vertical line Ka fault tha to a problem horizontal section me hoga. Es Ka fault Ka picture neche Diya hu. Es fault ko check korne keliye mene cold test Kiya hu .pehle to yoke coil Ka wire ko continuety mode me multimeter sath check Kiya .yoke coil thik tha.mene yoke coil or horizontal output transistor ke bech Ka circuit ko check Kiya to ... Mar 01, 2008 · Usually a straight line indicates vertical output circuitry problems. I would check around the output IC first for bad connections or bad chip. You could have other problems too like bad capacitor or other component failure, but the IC was the most common for this problem. Jul 21, 2015 · I have a Samsung LN46C630 46" LCD 1080p TV that is about 2 years old. I have been getting thin vertical lines across the screen intermittently. Sometimes several times an hour, sometimes just once or twice a day. If I wiggle the HDMI cable at the TV input it goes back to normal. Nov 17, 2018 · In this article, we have covered only about some common LCD TV problems and solutions. Keep visiting our website and this article for more updates on other LCD problems and solutions. You will also gain valuable information on CRT/LED TV problems and solutions. We deal with problems like TV screen repair, screen replacement, dead pixels, ghosting, burn-in, vertical lines, horizontal lines, dark picture, incorrect colors, fuzzy picture, TV turning itself off, distorted sound, snowy picture, screen breakage, black screen, blue screen, green screen, squares/tiling, frozen TV screen, rolling & distorted ... Once all TV and external device picture settings are set,reset the external device. Turn the external device off. Remove the power cord from the wall outlet or powerstrip. Wait 30 seconds then re-apply power to the device. Turn the external device back on. If horizontal or vertical lines remain on the TV, theexternal device may need service. Mar 25, 2020 · A faulty fuse on the wrong input channel causes failure to display pictures when the TV is switched on. The TV fails to produce sound when there is no power supply. If the TV has programming issues, it turns off for no reason. Firmware that is out of date can also cause this problem. A worn out jumper on the power supply causes screen flickering. Nov 14, 2014 · To my surprise this resistor actually act as fuse for the vertical circuit and once it opened means the supply to the vertical circuit was cut off hence the horizontal line on the screen. This also made me to conclude that the I.C could have actually shorted and that is what caused this fusible resistor to open. Crt tv vertical section diagram Dec 28, 2010 · If you see a horizontal line, you have disconnected the vertical deflection coil. If you see a vertical line, you have disconnected the horizontal deflection coil. Use a continuity tester to identify the matching ends of coil. Mark or remember their locations.