bad lcd panel symptoms manufacturer

2. #Confirm whether the VAA is normal (normally about 17V). If abnormal, disconnect the RP32 to confirm whether it is caused by DC/DC loop or X-side COF: disconnect RP32, if the VAA is normal, the COF is bad, CO must be changed; COF can be Disconnect one by one to determine which NG disconnects RP32, VAA NG, try to change UP1; at the same time, confirm whether the continuity of the surrounding triode is OK.

4. #Press the LCD glass side of the panel, if the vertical lines disappear or reappear, it can be judged that the cause of poor contact, OM checking should be able to find the poor contact.

The above is the full text of LCD screen failure repair guide, we hope it is helpful to you. If you need to buy LCD and find a reliable LCD supplier, we suggest you to read our other great blog – How to find a reliable LCD supplier.

Founded in 2014, VISLCD is a professional LCD supplier. We provide LCD modules, touch LCD and customized LCD in various sizes with stable quality and competitive price. Welcome to contact us for any LCD demand, thank you.

Liquid crystal displays (LCDs) are the most widely used display technology. Their applications cover TV, mobile phone, appliances, automotive, smart home, industrial meters, consumer electronics, POS, marine, aerospace, military etc. LCD screen display problem can occur for several reasons.

Effect of environmental conditions on the LCD assembly. Environmental conditions include both the effects of temperature and humidity, and cyclic loading.

Effect of manufacturing process. With the development of LCD for more than 40 years and the modern manufacturing equipment, this kind if defects are getting rear.

Common failures seen in LCDs are a decrease in screen contrast, non-functioning pixels or the whole display, and broken glass. Different kinds of LCD display problem need to have different kinds of fix methods or make the decision not worthwhile to repair.

Broken glassIf you accidently drop the LCD and you find it broken on the surface but the display still works. You might just break the touch panel; you can find a repair house or find a youtube video to replace the touch panel. If you find the display not showing, especially you find the fluid leaking out. You need to reply the whole display modules.

Dim LCD displayLCD can’t emit light itself. It uses backlight. Normally, the backlight is not fully driven, you can increase the LED backlight to make a dim LCD display brighter. But if you LCD display has been used for a long time, it is possible that the LED backlight has to be the end of life (not brightness enough) if you turn on 100% backlight brightness. In that case to fix LCD screen, you have to find a way to change the backlight. For some display, it is an easy job but it can be difficult for other displays depending on the manufacturing process.

LCD has white screen – If a LCD has a white screen which means the backlight is good. Simply check your signal input sources which are the most causes. It can also be caused by the display totally damaged by ESD or excess heat, shock which make the LCD controller broken or the connection failure which has to be repaired by professionals.

Blur ImagesAs the LCD images are made of RGB pixels, the screen shouldn’t be blur like old CRT displays. If you do see blur images, they might be caused by two reasons. 1) LCD has certain response time, if you are playing games or watch fast action movies, some old LCD displays can have image delays. 2) The surface of the LCD is made of a layer of plastic film with maximum hardness of 3H. If you clean the surface often or use the wrong detergent or solvent which cause the surface damage. To fix damage on LED screen it’s need to be changed with professionals.

If you have any questions about Orient Display displays and touch panels. Please feel free to contact: Sales Inquiries, Customer Service or Technical Support.

Performance issues may occur if there is any type of damage that is caused to the display cables or the LCD screen. LCD screen may show that symptoms like LCD screen stops working, work intermittently, color mismatch, flickering, display horizontal or vertical lines if there is damage to the display cables or the LCD screen.

If the issue persists on the external monitor, it may be an issue with the video card (GPU) or video settings and not the laptop LCD panel. Go to verify display or video issues in Windows Safe Mode. Otherwise, go to the next step.

Performance issues may occur if there is any damage to the LCD screen. The display may stop working, work intermittently, flicker, display horizontal or vertical lines, and so on, if there is damage to the display screen.

Dell laptops have integrated diagnostic tools that can determine if the screen abnormality is an inherent problem with the LCD screen of the Dell laptop or with the video card (GPU) and computer settings.

When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry images, horizontal or vertical lines, color fade, running a diagnostic test on the LCD helps identify if the issue is with the LCD panel.

Press and hold the D key and turn on the computer to enter the LCD built-in self-test (BIST) mode. Continue to hold the D key until you see the entire screen change colors.

If you do not detect any screen abnormalities in the integrated self-test mode, the LCD panel of the laptop is functioning properly. Go to the Update the video card (GPU) driver, monitor driver, and BIOS section.

If you notice any abnormalities in the LCD built-in self-test mode, contact Dell Technical Support to learn more about repair options that are available in your region.

Display settings like brightness, refresh rate, resolution, and power management may affect the performance of the LCD screen on your Dell laptop. Changing or adjusting the display settings can help resolve several types of video issues.

If the diagnostic tests on the LCD panel and the video card (GPU) passed, it is most definitely an issue that is related to software that is installed on the computer. If the above troubleshooting steps did not resolve the issue, you may try to restore the computer to factory default settings as a last resort.

Troubleshooting CRTs versus LCDs begins with similar steps, but diverges due to the differing natures of the two display types. The first troubleshooting steps are similar for either display type: power down the system and display and then power them back up; make sure the power cable is connected and that the outlet has power; verify that the signal cable is connected firmly to both video adapter and display and that there are no bent pins; verify that the video adapter is configured properly for the display; try the problem display on a known-good system, or try a known-good display on the problem system; and so on. Once you"ve tried the "obvious" troubleshooting steps, if the problem persists, the next step you take depends on the type of display. The following sections cover basic troubleshooting for CRTs and LCDs.

Check the obvious things first. Verify that the CRT is plugged in (and that the receptacle has power), the video cable is connected to the video card, the computer and CRT are turned on, and the brightness and contrast settings are set to the middle of their range. If none of these steps solves the problem, your CRT, video card, or video cable may be bad. Check the suspect CRT on a known-good system or a known-good CRT on the problem system.

The CRT may need to be degaussed. A CRT that sits in one position for months or years can be affected even by the earth"s very weak magnetic field, causing distortion and other display problems. Exposing a CRT to a strong magnetic field, such as unshielded speakers, can cause more extreme image problems. Many modern CRTs degauss themselves automatically each time you cycle the power, but some have a manual degauss button that you must remember to use. If your CRT has a manual degauss button, use it every month or two. The degaussing circuitry in some CRTs has limited power. We have seen CRTs that were accidentally exposed to strong magnetic fields, resulting in a badly distorted image. Built-in degaussing did little or nothing. In that case, you can sometimes fix the problem by using a separate degaussing coil, available at RadioShack and similar stores for a few dollars. We have, however, seen CRTs that were so badly "magnet burned" that even a standalone degaussing coil could not completely eliminate the problem. The moral is to keep magnets away from your CRT, including those in speakers that are not video-shielded.

If your LCD displays no image at all and you are certain that it is receiving power and video signal, first adjust the brightness and contrast settings to higher values. If that doesn"t work, turn off the system and LCD, disconnect the LCD signal cable from the computer, and turn on the LCD by itself. It should display some sort of initialization screen, if only perhaps a "No video signal" message. If nothing lights up and no message is displayed, contact technical support for your LCD manufacturer. If your LCD supports multiple inputs, you may need to press a button to cycle through the inputs and set it to the correct one.

Unlike CRTs, where increasing the refresh rate always reduces flicker, LCDs have an optimal refresh rate that may be lower than the highest refresh rate supported. For example, a 17" LCD operating in analog mode may support 60 Hz and 75 Hz refresh. Although it sounds counterintuitive to anyone whose experience has been with CRTs, reducing the refresh rate from 75 Hz to 60 Hz may improve image stability. Check the manual to determine the optimum refresh rate for your LCD, and set your video adapter to use that rate.

First, try setting the optimal refresh rate as described above. If that doesn"t solve the problem and you are using an analog interface, there are several possible causes, most of which are due to poor synchronization between the video adapter clock and the display clock, or to phase problems. If your LCD has an auto-adjust, auto-setup, or auto-synchronize option, try using that first. If not, try adjusting the phase and/or clock settings manually until you have a usable image. If you are using an extension or longer than standard video cable, try connecting the standard video cable that was supplied with the display. Long analog video cables exacerbate sync problems. Also, if you are using a KVM switch, particularly a manual model, try instead connecting the LCD directly to the video adapter. Many LCDs are difficult or impossible to synchronize if you use a KVM switch. If you are unable to achieve proper synchronization, try connecting the LCD to a different computer. If you are unable to achieve synchronization on the second computer, the LCD may be defective. Finally, note that some models of video adapter simply don"t function well with some models of LCD.

Not all analog video cards synchronize perfectly with flat panels. The gray Shutdown screen exaggerates the problem, so don"t worry if very tiny movements are visible after you"ve adjusted clock and phase as well as possible. After you"ve set the clock and phase controls for the best image possible on the gray screen, cancel Shutdown and the image should be optimized.

Your video card is supplying a video signal at a bandwidth that is above or below the ability of your LCD to display. Reset your video parameters to be within the range supported by the LCD. If necessary, temporarily connect a different display or start Windows in Safe Mode and choose standard VGA in order to change video settings.

This occurs when you run an LCD at other than its native resolution. For example, if you have a 19" LCD with native 1280x1024 resolution but have your display adapter set to 1024x768, your LCD attempts to display those 1024x768 pixels at full screen size, which physically corresponds to 1280x1024 pixels. The pixel extrapolation needed to fill the screen with the smaller image results in artifacts such as blocky or poorly rendered text, jaggy lines, and so on. Either set your video adapter to display the native resolution of the LCD, or set your LCD to display the lower-resolution image without stretching the display (a feature sometimes referred to as display expansion), so that pixels are displayed 1:1, which results in the lower resolution using less than the entire screen.

This is a characteristic of LCDs, particularly older and inexpensive models, caused by defective pixels. Manufacturers set a threshold number below which they consider a display acceptable. That number varies with the manufacturer, the model, and the size of the display, but is typically in the range of 5 to 10 pixels. (Better LCDs nowadays usually have zero dead pixels.) Nothing can be done to fix defective pixels. Manufacturers will not replace LCDs under warranty unless the number of defective pixels exceeds the threshold number.

Some people claim that leaving the unit powered off for a day or two will "erase" a persistent after-image. Others suggest leaving a neutral gray screen (like the one used for phase adjustment) up on the screen to "equalize" the display. I dunno. FWIW, I"ve seen this problem on older Samsung panels but never on the Sony or NEC/LaCie panels I use.

Again, this is a characteristic of LCDs, particularly older and inexpensive models. The after-image occurs when the display has had the same image in one place for a long time. The after-image may persist even after you turn the display off.

Transistor-based pixels in an LCD respond more slowly than the phosphors in a CRT. The least-expensive LCDs exhibit this problem even with slow image movement, as when you drag a window. Better LCDs handle moderately fast image movement without ghosting, but exhibit the problem on fast-motion video. The best LCDs handle even fast-motion video and 3D gaming very well. The only solution to this problem is to upgrade to an LCD with faster response time.

However, if the digitizer or LCD is also damaged during a fall, that screen no longer carries value because it cannot be refurbished. Repair shops cannot sell broken LCDs to refurbishing companies; therefore, they cannot offset the cost of an LCD repair. That is why repair stores often charge a little extra if there is damage to the LCD or digitizer, to make up for that loss. Repair stores that don’t have an additional charge for an LCD repair typically inflate their glass repair price to make up for the loss from damaged LCDs. If they have one price, that means everyone is paying more to cover the cost of customers who have damaged LCDs and customers who only have cracked glass. This is why TCR separates the price of glass and LCD repairs for you! If you only have cracked glass, you only have to worry about paying to replace the cracked glass.

If your phone or tablet’s glass is shattered there will be cracks or chips on the screen itself. If it is just the glass that is damaged, the device may still function and you may be able to use it normally. If this is the case, it is likely that only the glass needs to be replaced. To prevent further damage to your device it is best to get it repaired quickly. For example, if liquids seep through the cracks it could cause permanent damage to the LCD.

Many people may continue to use their touchscreen with shattered glass and delay fixing the glass on their devices; however, if the touchscreen isn’t responsive, it could be a sign of more significant damage to the device’s digitizer which is integrated with the LCD screen.

A pixelated screen can indicate LCD damage. This would look like a patch of multicolored dots, a line or lines of discoloration, or a screen with rainbow colors. For many people, these colors are an easy way to know that their LCD is broken and that they should get it repaired.

Dropping your phone isn’t the only reason you’ll end up with a pixelated screen. Over time, your screen’s LCD may break down through regular use. This happens to other devices aside from your smartphone or tablet. Pixelation can happen to TVs and computers, too. People typically decide to buy a new device when this happens. Fortunately, with an LCD repair, you can fix the device without needing to replace it.

A black screen or black spots on your smartphone or tablet is an indication of a damaged LCD. Often with a bad LCD, a phone may still turn on and make noises, but there is no clear picture. This does not necessarily mean any other part of the phone is damaged and a simple screen replacement will get it functioning again. Sometimes it can mean a battery or other internal component is damaged. It is best to have a highly qualified phone repair technician diagnose what is wrong so the appropriate repair can be made.

Fortunately, your mobile device is fixable whether you cracked the glass or damaged the LCD. Stop by or call TCR: Triangle Cellular Repair at (919) 263-2699 for a free diagnostic and quick, affordable cell phone repair in Chapel Hill and surrounding areas. We’re always happy to help!

This is a common problem in TVs and is a sign that your TV panel is failing. But before you call an expert to check the TV, you could try following these steps and check if they work:

If it continues to show lines, you may mostly have to get the panel replaced and replacing the panel can be a costly affair, depending on the TV and its model. LED panels range anywhere between Rs 8,000 to Rs 85,000, while LCD panels range between Rs 6,000 to Rs 25,000.

When the TV has speakers that work perfectly fine but it has no picture, there is mostly an issue with the back-lighting system or the power supply board, which will need to be replaced. In the case of an LCD TV, it works with the help of a backlight that is used to illuminate the picture on the screen. When the backlight begins to have problems, the screen turns blank.

To fix this issue, the backlight will have to be replaced by a TV expert. Another possible reason is that the backlight on the LCD TV which has a power inverter has failed. When this happens, you may need to replace the inverter or the capacitor.

Be it a panel issue or a major technical issue with the TV, resolving these problems is a costly affair. It’s best not to ignore any of these signs and call an authorized TV expert before the problem worsens.

Gm I have a proscan plcd3717A tv. It comes on for a while and shut off. 37 LCD tv at school tuner. S/n a1212089790001040. I changed the power supply board. But still doing the same thing. Should I change the main board then.

Hi my 40inch LCD TV comes on on standby then I press the button and the light turns blue. There is no pic or lights on the screen and also no sound. Model no,m40/57g-GB-ftcu-UK. Product code ,um40d57bftcug107, serial no, 105571 03650. Thanks

Have 32″ Philips LCD TV. Was watching it while it was sitting on the carpeted floor and it got knocked forward. It didn’t hit hard, the picture is still perfect but now it is only Black and White (no color). I hooked up another TV to the source and it’s color.

I have here two Samsung LCD 32 inch model LA32D403E2 that has tiny horizontal lines but the second one will show very well for about five to ten minutes and start pouring white dews on the screen.

My two year old threw a toy at our 60 inch Samsung LCD tv. We have sound but no picture. There is no visible external damage, but where it was hit there are thin vertical rainbow stripes about 4 inches tall and wide. Trash? Thanks for any help you can provide.

I have a jvc lcd tv my daughter stuck a butter knife between the black plastic edge and the tv screen and bow there is a black spot where the knife was and a small thin horizontal white lone and a little thicker vertical pinkish line the screen is not cracked just black spot and lines how can I fix this?

My 3yr old son threw a plastic toy into the screen of my 60inch led lcd 3d tv now theres vertical and horizontal line in the middle part where the toy hit do you think its as good as gone?

I have an lg 55lv5500 LED LCD. I have power, sound and picture. However, the picture has vertical lines that are discolored over the whole screen (blacks are green, etc.). I have taken off the back and when I unplug the smaller LVD cable connected to the left of the TCon board, the picture clears but every other vertical line is black (meaning the vertical lines that are displayed when I do this appear to be the correct color). Is the LCD or the TCon board bad? Suggestions on how to further diagnose the problem? While I wasn’t present, my wife who was watching at the time said she heard a “pop” when the problem originated.

If your LG TV has vertical lines that are changing colors and you heard a “popping” noise while watching the TV, then this is most likely the T-con board (Timing Control Board) has a bad cap or another board has a capacitor on it that is bad. Check to see if you can find an obvious sign of a bad cap on any board. If so, replace the cap. Also, check to be sure all ribbon cables are connected and they are not damaged. If you cannot find a popped cap, then the T-con is most likely causing your issue from what you have explained. As long as the LCD panel is not cracked or broken, then a board or bad cap is causing the issue.

FYI – The T-CON board is the part of the LCD screen, it relays messages between the device’s processor and the display. The T-CON board synchronizes different parts of the screen with the info it gets from the processor. If the T-CON board malfunctions then the timing between parts of the board is disrupted and this leads to both horizontal and vertical lines that will display on the screen. It can also cause pixelation issues on your TV screen.

The colored lines and horizontal and vertical lines issue with your Samsung TV could be caused by a cracked screen. If the screen is not cracked, it could be a bad inverter, bad ccfl, etc. You may also have bad capacitors on the main board. Check the main board and check the capacitors for bulging.

If a simple tap on the side of the TV fixes the problem… you may just have a loose ribbon connection inside the TV. If the distortion on the screen changes, it is most likely not the screen but a cable or board in the TV. You can also check what connects to the glass to see if that is the issue. If keeping the TV on for a period of time fixes the issue, that could be a signal a board is bad. Safely open the tv up and check to see what may be an obvious sign of the issue. Check for loose cable, popped caps, burnt boards…etc.

I have a HiSense flat LCD, model number 50K610. The screen got hit on the bottom right corner and now it has lines going up it. I am wondering where I can order a new screen at?

My TV dropped on the floor a few months back, and now its messed up, has a big spider crack in it, kind stretches across the TV but not too bad, a few spots are just black, the rest have vertical lines of different colors. You can’t feel the cracks on the outside, and you can still kind of see the background image but its still pretty jacked up. Please help!

A 40 inch screen replacement for one of the low end Sanyo TVs would cost as much as the TV. Usually a screen replacement makes sense if your TV is over $1500 as the screen cost will not be over the cost of the TV, but a cheap HDTV replacement screen will be too expensive to make financial sense. Buying a new TV will be your best bet. Your TV may also have internal damage, meaning a circuit board could be bad since it fell over. So even if you replaced the screen, you may still have issues. Sell it on Craigslist for $50 dollars as replacement parts for someone who has the same TV and may need the stand or similar.

It will cost more to fix the screen than a new LCD TV. If you really want to check around look for screens on eBay. OR… Go on Craigslist for the same busted TV but with a good screen and swap it out.

Is the frame of the Toshiba TV cracked or is it for sure the screen? Did it fall? Something hit it? How bad is the crack? Can you watch TV or is there vertical or horizontal lines showing? If so, what color are the lines and how wide are they?

I recently bought a Samsung 65″ curved 4k TV (JS9000) and the screen received a somewhat deep vertical scratch near the top of the screen. About 3/4 – an inch long. Not an actual crack and no other problems with the picture, but it’s annoying because I know it’s there and the TV is less than a month old. And expensive. If I look closely, the pixels still seem to work, but the outer surface has been removed where the scratch is. Does anyone fix curved panels yet, or am I just going to have to live with it?

If the picture is fine but there is a small scratch on the screen, there is not much you can do. There are screen scratch repair kits but may not work properly if applied to an LCD or LED screen. Check YouTube for ways to remove scratches and marks from flat screen TVs.

May be an issue with the plasma gas or screen itself. This type of issue can happen on plasma TVs. Do you smell any type of burning smell? If picture shakes, you may have a bad board or a loose ribbon cable inside the TV.

Our Vizio E472VL was working fine until recently the picture was replaced by about 4 inch narrow band of vertical lines. I thought this might be the ribbon cables connecting the main board to panel but now not sure. I press on the top of the cables to improve connection and the band will widen, change color or move around; however I never get any picture not even the menu. Therefore, I am at a total lost on what the problem might be. Any suggestions? Thanks in advance – Bill

I have an LG LCD. Light horizontal lines just started to appear. No damage visible, mounted to a wall closer to the ceiling. Happens more visibly when showing greens or blues, but seems to fade in and out. Can you tell me what the problem might be, and a possible solution. Thank you.

I have a Sanyo TV DP46849. When you turn it on you get a white screen with thin color vertical lines. You see some of the lines start getting lighter and lighter and then go white. There is no sound before this happened the right side of screen would roll like so i had the t-con replaced but no change. I spoke to a repair shop they say it may be a the main board just went out it powers up fine and the repair shop said the LCD screen was not cracked what do you think the problem may be.

If you have power issues and the screen is showing horizontal lines, you most likely have some board issues. Troubleshoot the issue and be sure your screen is not cracked. Horizontal lines CAN indicate a board issue. Be sure the boards in the TV are properly secured together with the ribbon cables. Check everything visually in the TV for a bad or burned board.

Yes we agree, it is a shame to throw away a giant TV that has one bad component. We always try to tell people to fix it themselves by using used spare parts to keep cost down. Try to find the same TV online for parts. Many times we have fixed a TV by simply finding the same exact TV online on a website such as Craigslist. We had a t-con board go out on a 55″ Samsung TV. We found the same TV with a cracked screen online for $50 dollars. We bought it, removed the board, and put it in our other TV and it fixed the problem. We now also have other spare parts, a new remote control, and another TV stand in case we ever need it. If you have the money, buy new, if you don’t have the money, get creative and try to fix it yourself.

Even if the screen on your Sony Bravia TV is not cracked, it is most likely damaged. It may have a cracked inner screen or when the screen fell over. The TVs front panel may have hit and made contact with a board inside the TV. Is the front panel of screen depressed inward on any part of the front screen surface? Look at the TV screen from a side angle with a flashlight to see. If there is no damage to the front panel, then the inner panel may have cracked. You should be able to see any damage to the inner or outer screen panel when using a flashlight.

The outer screen panel of my Sony Bravia took a hit and is cracked, only a small portion of the screen has images coming out and the rest of the screen has vertical lines and black patches. Can it be fixed at home or do i get a replacement outer screen panel?

Philips 47″ LCD…comes on works fine occasionally, but usually when turning it on, a horizontal gray bar with vertical lines inside it blinks and the screen will slowly fade to white. I can see about an inch of video at the top sometimes. So I turn it off for a few minutes and try again. After an hour or so of repeatedly turning off and on, it will eventually come on and work perfectly…until I turn it off, then I have to try turning it off and on for an hour or two until it decides to work. I’ve opened the back and noticed no bad capacitors and wiggled all connectors.. Any idea?

You may have a bad power board if you need to take an hour of time trying to turn the TV on or off. What is the model number of your Philips 47″ LCD TV? Has anything come in contact with the screen? Did this problem suddenly appear or did this issue happen over time? If the screen was not hit then a board may be on the fritz. When you opened the TV did you check to be sure all boards are secure and the wire harness/ribbon cables are tight and in place correctly?

Had an incident where my 60″ Vizio Smart TV got hit on the left side of screen. Came home to turn on TV and the TV had back glow but no picture (still has sound) and a nice size point of impact. Cracked out internally (exterior panel is fine). Looking for best advice in fixing the TV, really hate to just get rid of it. The p.o.i maybe lit up kinda rainbowish and the rest of the screen is blacked out but still has glow. I realize that the internal glass panel needs replaced at the very least, based on further symptoms is there anyone that may know what needs to be done?

If the inner glass is cracked, the only way to fix the TV is to replace what is broken. The inner glass or panel for the TV can be found online but may cost more than the TV. Finding a used TV with an intact screen is the cheapest way.

I have a rca smart led lcd 65 inch I purchase the tv about a month ago from Aaron’s furniture the tv fell over now it’s cracked on the bottom right corner is this fixable and how much will it cost or will my warranty cover the tv still turn on & you can still see the picture on the tv but it’s just crack

I have a Phillips 9,000 Series Flat HDTV, 119 cm LCD. Most of the screen is blocked by a white screen, with some rainbow vertical lines within it. To the right of the main crack (which is a little to the right of the center of the screen), the white is darker and there are more rainbow lines there. Only at the very top of the screen in the middle can you see the actual channel. The TV does work overall in terms of turning on, the cable, etc. and you can still hear the sound, its just the crack. I am assuming that I would only need to change the screen in this situation. Do you have any cheap suggestions?

I have a question regarding my TV. I have started seeing vertical lines on the TV screen a couple of months ago on a right side of the screen. It didn’t bother me too much because it wasn’t that bad. I was on a vacation for a month and TV was unplugged. When I got back I turned TV on and vertical lines were gone but after a few days they were back but this time they are more lines. When I turned TV on this morning I only got sound with no picture.

If the screen has NO CRACKS, then the t-con board is the most likely internal circuit board that is causing the vertical lines on your TV. When replacing boards in your TV, always use your exact model number to replace parts. You may be able to use a t-con board made by your same TV maker if it is one model number difference, but it may not work. We recommend always buying a new board when fixing your TV yourself unless you have access to a used board for free. You may want to try testing different inputs and cables to be sure the t-con is bad but it sounds like the t-con is the issue.

You may have a bad board. If there are no cracks on the screen, a board could have shorted or become damaged. You will have to take the TV apart and check each individual board to see what may be causing the issue. Plan on trying to find a T-con board for your Samsung TV model. That is the board that controls the LCD’s lines and pixels.

A Vizio 42″ inch replacement TV screen can be found on eBay. If it just the LCD screen that is cracked there is one for around $95 dollars US. Here is the link to the Vizio TV replacement screen.

You may want to open the TV up and see if you can find a bad board affecting the screen. However… If pixels are affected then your screen is most likely bad. You can try finding a replacement board or screen (once you are done troubleshooting to find out what actually is needed) and order it online. If you open the TV, have a look at the circuit boards to make sure there is no obvious signs of burns or popped capacitors. If all boards look good visually, have a look at the inner screen for damage. Look on LCD PARTS as they have many parts you may need to fix your TV.

You need to first find the generic panel and be sure the size is the exact same, obviously. Then, make sure the panel you are looking at says COMPATIBLE with your model and size TV. Not all generic screens are made the same. Be sure the different cable connections match yours and the areas where it slides into your TV match up. The word COMPATIBLE is what you need to read. If you have a Vizio 55″ 4k M series TV, then make sure the generic replacement screen says COMPATIBLE with Vizio 55″ 4k M series TV.

A screen will cost more than your TV is worth unless you get a generic from China on a site like Alibaba. The best way for you to find a screen is find one on Craigslist that has a bad board and use that TV for the replacement screen.

I have a 32″ Westinghouse flat screen LCD TV. A small horizontal bluish red line appeared on my television about a year ago and I chose to ignore it since it was small. Well a year later, the line has spread and there are more throughout the screen. It wasn’t dropped or hit so I don’t know what happened. The warranty is out so I cant call the manufacturer. I was looking at screen repair shops but if there’s and easier/cheaper fix, I would rather go that route.

You may have a bad board in the TV causing the blue red horizontal line on the TV screen. If the TV was not hit or is not cracked, then a board may be causing the issue. This will involve unplugging the TV, removing the screws on the back, and visually examining the boards to see if you see one that is visually damaged. Look for popped or swelling little capacitors on the boards. If all boards are okay, you may have a screen issue. Is the screen cracked where the line is showing? Even a tiny crack can make that happen.

Sounds like you have a bad power supply board in your TV as to why it does not turn off and makes noise. You can either take the TV apart and check the board(s) for damage or junk it and buy a new one. 32″ TV’s are ultra cheap nowadays and it is going to be cheaper to buy a new TV then replace boards in a 32″ TV (if you factor in labor and time). You may find a new board for around $30 to $50 dollars online but there is no guarantee a new board will fix your TV without knowing which board is causing the problem. (You can usually spot a bad board in your TV if a single capacitor on a board has popped, split, or swelled up.)

My flat screen TV has had these weird vertical lines for the past week, so knowing how to get rid of them will make my TV watching experience more enjoyable. Determining whether the glass panel on my screen or the LCD or LED part of it is broken seems like something I should do right now. Both of those things seems really easy to fix.

I have a Toshiba LCD TV 32CV500E and have had it for around 4 yrs. Suddenly its showing light grey like flashing light.. still I can hear sound. What the issue and can someone advise ?

Can you see any actual cracks on the TV screen or is it purely color lines going vertical? If you see cracks the screen needs replaced. If you see vert lines only, it may be a component in your TV that was damaged. You could unplug, and open up the TV and check to be sure all boards look okay inside the TV. A component such as a capacitor may have been damaged when the toy hit the screen. You most likely have a bad screen but in some rare cases simply changing out a board or a cap on a board can fix this issue.

I have a 65″ RCA LCD LED backlight. While moving I must have put to much stress on it because it is now cracked in the top right corner with some spider Web action. Is this fixable and if so how would I go about it.

Are you aware of the screen getting hit or damaged by even though there is no physical damage? The screen could be damaged… LCD screens on TVs are made up of two thin layers of glass containing liquid crystal material between them. When the glass becomes damaged, debris infiltrates the crystal layer. If there is no damage to the screen, you may have a board or boards issue.

You should be able to buy any 32″ JVC replacement screen but they are usually not cheap. You could try Alibaba as they have just about every type of replacement screens for LED and LCD flat screen TVs.

Do you have an LED. LCD, or Plasma TV? Is the complete screen gray? Are they gray lines now or is the complete area of the screen gray? Can you still hear sound? What is the make and model of your TV?

My Samsung TV did not fall over and crack, but all of a sudden there is a little white line in the left side of the TV. I bought it new 4 months ago and got an extended warranty. Will this be covered by my warranty? Or should i research what part may have gone bad and fix myself?

Ever had your TV showing nothing but a black screen even if the audio was working? Unfortunately, that’s a common issue with low/middle-end LCD/LED TVs these days… Even more frustrating, this issue often comes from a rather tiny and cheap component that can be easily replaced. Most common issues are:

That implies disassembling the TV to access the backlight which is between the LCD screen in the front and the boards in the rear. In my case, with a Samsung F5000, I had to process as follows:

First we have to remove the back housing to reveal the boards (from left to right: main board, T-CON, power supply) and disconnect the LCD panel from the T-CON board.

Note: Older TVs have neon tubes for backlight, which is thicker and less exposed to this kind of failure. LED backlight is the most common thing these days, but do not mistake an LED TV with an OLED TV. The first one is a classic LCD panel with a LED backlight, whereas the second is an OLED panel that doesn’t need any backlight as it is integrated in each pixels (making the spare parts much more expensive by the way).

There might be a lot of other root causes for similar symptoms, a black screen often looks like something very serious and therefore expensive to repair, but this case is the perfect example that taking some time to look for the root cause can sometime lead to a good surprise: here a 1$ fix!